Let’s face it – dealing with legacy systems isn’t anyone’s favorite part of running a business. They’re slow, clunky, and often hold you back when you’re trying to move fast or innovate. But replacing them completely? That’s not always practical either. That’s where modernization comes in.
Across the US, there are development teams that specialize in bringing old systems up to speed without ripping everything out and starting over. Whether it’s refactoring code, moving things to the cloud, or making older platforms play nicely with newer tools, these companies help keep your tech stack usable, secure, and ready for what’s next. In this guide, we’re taking a closer look at the ones that do it best.
1. A-listware
A-listware helps companies bring outdated software up to modern standards without disrupting ongoing operations. When working with legacy software modernization, they focus on understanding how the existing tech supports business goals before deciding what should be rebuilt, refactored, or integrated with newer platforms. They don’t believe in rushing modernization just for the sake of it. Instead, they use a realistic, problem-solving approach to keep systems stable while improving performance, usability, and long-term support. They’ve seen how technical debt can slow down growth, so their goal is to streamline and future-proof without adding unnecessary complexity.
They often build dedicated development teams to handle modernization efforts alongside other services like infrastructure upgrades, cloud migrations, and interface redesigns. Their process typically includes discovery, team setup, and project planning, followed by agile execution and regular communication. Depending on the situation, they might break down monolithic systems into microservices, improve database efficiency, or rework UI layers to better fit current usage. Every project is tailored to the client’s context, and their engineers focus on balancing technical updates with minimal disruption to daily business workflows.
Key Highlights:
- Tailored legacy modernization services based on business context
- Option to build dedicated full-time engineering teams
- Flexibility in engagement models including agile pods and time-material
- Emphasis on reducing technical debt and improving stability
- Integration of legacy systems with newer cloud platforms or third-party tools
Services:
- Legacy software modernization
- Custom software development
- Cloud infrastructure migration and support
- UI/UX redesign for legacy applications
- System integration and data transformation
- Application performance tuning and optimization
- Dedicated team setup and staff augmentation
- DevOps and CI/CD implementation
- Software audits and modernization strategy planning
- Post-modernization support and monitoring
Contact Information:
- Website: a-listware.com
- Phone: +1 (888) 337 93 73
- Email: info@a-listware.com
- Address: North Bergen, NJ 07047, USA
- LinkedIn: www.linkedin.com/company/a-listware
- Facebook: www.facebook.com/alistware
2. Sparq
Sparq approaches legacy software modernization by blending AI strategy with modern infrastructure and product design. Instead of treating modernization as just a technical upgrade, they embed artificial intelligence into the entire process, starting from system assessment through to deployment. Their teams support clients across various industries, including healthcare, finance, and logistics, by focusing on how legacy systems can evolve to meet current business and user demands. Rather than fully replacing old systems, Sparq helps reshape and integrate them with newer technologies, often using cloud-native architecture and scalable platforms.
They emphasize understanding the state of existing applications before making changes. That includes evaluating outdated codebases, identifying scalability gaps, and planning migration or refactoring work. Their methodology includes technology selection, microservices architecture, DevOps, and agile team integration. Whether it’s rebuilding from scratch or gradually modernizing components, their goal is to make legacy platforms more agile, cost-effective, and user-friendly. With experience across product design, platform engineering, and data-driven development, they support clients in adapting legacy tools for today’s digital environment.
Key Highlights:
- AI-first approach to modernizing legacy platforms
- Focus on system scalability, cloud readiness, and future-proofing
- Support across design, infrastructure, and data analytics
- Experience with refactoring, rewriting, and migration strategies
- Ongoing testing and continuous improvement throughout the process
Services:
- Legacy application assessment and analysis
- Strategic modernization planning
- Cloud-native and microservices migration
- Application refactoring and rewriting
- Data architecture and AI model integration
- Quality assurance and testing
- Platform engineering and infrastructure services
- Scrum-as-a-Service for agile delivery
Contact Information:
- Website: www.teamsparq.com
- Address: Atlanta, GA US
- Phone: 877-887-4774
- Email: inquiries@teamsparq.com
- Facebook: www.facebook.com/teamsparq
- Instagram: www.instagram.com/sparqinc
- Twitter: x.com/sparqinc
- Linkedin: www.linkedin.com/company/teamsparq
3. ModLogix
ModLogix focuses on bringing outdated software systems up to current standards through a structured modernization process. They start with a clear evaluation of each legacy application’s technical, business, and operational relevance before recommending a path forward. Their team works with everything from Visual Basic and .NET Framework to MS Access and Delphi, often found in older enterprise systems. Instead of defaulting to full system replacements, they offer migration, re-engineering, and integration to help companies extend the value of what they already have while aligning it with modern architectures.
A big part of their approach is auditing legacy software to understand current limitations, potential security risks, and architectural weaknesses. From there, they help clients prioritize upgrades based on system value and long-term business needs. Their services cover everything from desktop-to-web migration to full cloud transitions. They’re also comfortable working across sectors like healthcare, insurance, and financial services, where older software often plays a key operational role. Their team also evaluates whether a system needs a complete rewrite or if focused adjustments are enough to keep it relevant.
Key Highlights:
- Focus on Microsoft legacy tech including VB, .NET Framework, and MS Access
- Structured assessments to guide modernization planning
- Services tailored for enterprise and sector-specific platforms
- Support for re-architecting, upgrading, and API integration
- Flexible migration paths with cost-effective transition planning
Services:
- Legacy system audit and software assessment
- Desktop to web app migration
- Application re-engineering and rewriting
- Cloud migration and hosting transition
- API development and system integration
- Architecture improvement and refactoring
- Legacy application upgrade
- Source code assessment and compliance review
Contact Information:
- Website: modlogix.com
- Address: 1460 Broadway New York, NY 10036
- Phone: (646) 366-7566
- Email: info@modlogix.com
- Twitter: x.com/modlogix
- Linkedin: www.linkedin.com/company/modlogix
4. On Wave Group
On Wave Group offers legacy software modernization services by focusing on gradual transformation rather than complete overhaul. Their work usually begins with a deep look into the client’s existing systems and how those systems support current business operations. From there, they tailor a modernization plan that balances technical upgrades with long-term business goals. This includes refining architecture, improving performance, and aligning the system with current user expectations, all without stripping away functionality that still matters.
Their process includes assessment, technical refactoring, and a phased rollout approach. They prioritize continuity and stability while improving compatibility, usability, and efficiency. The team works across legacy databases, outdated workflows, and older user interfaces, bringing them up to modern standards using structured iterations and real-time feedback. Their services are framed around specific client goals, so each project is grounded in real operational needs instead of relying on one-size-fits-all tactics.
Key Highlights:
- Tailored approach to modernization and maintenance
- Focus on preserving core functionality while updating tech stack
- Iterative process that includes client feedback and testing
- Experience with legacy databases and outdated workflows
- Long-term planning aligned with business needs and tech changes
Services:
- Legacy system evaluation and modernization planning
- Architecture refinement and software component upgrades
- Migration of outdated interfaces to user-friendly designs
- Workflow and database modernization
- Integration with current technologies
- Ongoing support and system maintenance
- Custom modernization strategies for industry-specific needs
Contact Information:
- Website: onwavegroup.com
- Address: 8 The Green, Suite A, Dover, Delaware 19901, US
- Phone: +1 302 364 0378
- Email: info@onwavegroup.com
- Facebook: www.facebook.com/On-Wave-Software-Group-101488615833483
- Instagram: www.instagram.com/onwave_group
- Linkedin: www.linkedin.com/company/onwavesoftwaregroup
5. Andersen
Andersen approaches legacy software modernization as a layered process that balances technical improvements with business continuity. They support companies that still rely on older platforms by evaluating what’s worth preserving and what needs to change. Their method is flexible: it might mean a full system rebuild or just rehosting the current setup on modern infrastructure. Either way, the focus is on reducing tech debt, minimizing disruptions, and helping clients align their systems with today’s standards for usability, security, and performance.
They handle everything from small updates to large migrations, offering services like refactoring, re-architecting, and integration. Whether a company is dealing with monolithic applications that need to move to microservices, or simply wants to expose legacy functionality via modern APIs, Andersen builds a roadmap that fits. Their team also supports post-modernization tasks like change management, compliance updates, and quality assurance to keep systems running smoothly after the transition. The process is designed to be thorough without overcomplicating it.
Key Highlights:
- Full-cycle modernization with options from minor updates to full rebuilds
- Support for legacy-to-cloud migrations and monolith-to-microservice transitions
- Compliance updates and risk mitigation as part of the process
- Technical audit before modernization to understand code, architecture, and performance
- Tailored plans depending on system complexity and business goals
Services:
- Legacy system assessment and advisory
- Application modernization and re-engineering
- Migration to new platforms and cloud infrastructure
- Refactoring and re-architecting services
- API integration and encapsulation of legacy logic
- Data migration and cleansing
- Quality assurance and performance testing
- Change management and ongoing compliance monitoring
Contact Information:
- Website: andersenlab.com
- Address: 7300 State Highway 121, Suite 300, Dallas, Texas 75070
- Phone: +1 910 916 4176
- Email: vn@andersenlab.com
- Facebook: www.facebook.com/AndersenSoftwareDev
- Instagram: www.instagram.com/andersen.global
- Twitter: x.com/AndersenLabs
- Linkedin: www.linkedin.com/company/andersen-lab
6. Hidden Brains
Hidden Brains takes a structured approach to legacy software modernization, focusing on upgrading older systems while keeping disruption to a minimum. Their team handles a broad mix of modernization paths depending on how much change a system can handle. This might involve rebuilding an app with a new tech stack, migrating to the cloud, or breaking monolithic systems into microservices. Rather than going for a one-size-fits-all fix, they work from detailed assessments to match the right modernization track to a company’s specific challenges.
They’re also careful about preserving what still works. Alongside re-engineering and transformation, Hidden Brains offers platform upgrades, data migration, and consulting services to help organizations figure out where they stand before making big decisions. Their process is aimed at helping companies move faster, reduce maintenance hassles, and align with newer technologies without rewriting everything from scratch unless it’s absolutely necessary. The end goal is to make legacy systems more secure, more scalable, and more compatible with future plans.
Key Highlights:
- Focused support for both full system rebuilds and incremental modernization
- Specialized in transforming legacy platforms into scalable cloud-based setups
- Emphasis on preserving functional core systems while upgrading architecture
- Options to break monoliths into microservices for better agility
- Offers modernization consulting to help define the right strategy before acting
Services:
- Application modernization and re-engineering
- Legacy-to-cloud migration
- Platform and technology stack modernization
- Microservices architecture transformation
- Data migration and optimization
- Application modernization consulting
- Automation and DevOps transformation
- Ongoing support and system updates
Contact Information:
- Website: www.hiddenbrains.com
- E-mail: biz@hiddenbrains.com
- Facebook: www.facebook.com/HiddenBrains
- Twitter: x.com/HiddenBrains
- LinkedIn: www.linkedin.com/company/hiddenbrains-infotech-pvt-ltd
- Instagram: www.instagram.com/hiddenbrains_infotech
- Address: 17875 Von Karman Avenue Irvine, California 92614
- Phone: +1 323-908-3492
7. Bacancy
Bacancy handles legacy software modernization with a focus on AI-enhanced development workflows, cloud-native tools, and fast turnaround strategies. Their approach is built around making legacy systems relevant again without losing valuable core functionality. They prioritize flexibility, often tailoring modernization plans to fit either gradual updates or larger rebuilds, depending on what’s most feasible for the client’s infrastructure. Whether it’s updating outdated code, introducing microservices, or improving architecture for long-term support, Bacancy builds around specific technical and business requirements.
They combine development expertise with AI tools to speed up modernization and reduce manual overhead. Their team leans on real-time code intelligence, automation, and service mesh architecture to refactor legacy systems, streamline backend operations, and improve deployment cycles. This allows them to minimize disruptions while reworking core features, especially in sectors like finance, manufacturing, healthcare, and logistics. They also support clients with DevOps and data integration practices to help aging systems better connect with modern environments.
Key Highlights:
- Uses AI tools to speed up legacy modernization work
- Supports both partial refactoring and full platform upgrades
- Handles cloud migration and backend service transformation
- Focus on enterprise-wide architecture alignment
- Experience with global clients in regulated industries
Services:
- Legacy system assessment and modernization
- Backend refactoring and code updates
- Monolithic to microservices conversion
- Cloud infrastructure and DevOps support
- AI-driven development assistance
- Architecture planning and optimization
- Application performance improvements
- Ongoing support and dedicated development teams
Contact Information:
- Website: www.bacancytechnology.com
- E-mail: solutions@bacancy.com
- Facebook: www.facebook.com/BacancyTechnologyLimited
- Twitter: x.com/bacancyTech
- LinkedIn: www.linkedin.com/company/bacancy-technology
- Instagram: www.instagram.com/bacancytechnology
- Address: 33 South Wood Ave, Suite 600, Iselin NJ 08830
8. Cleveroad
Cleveroad works with companies looking to bring outdated software up to current tech standards without throwing everything out and starting over. They take a measured approach to legacy system modernization, combining technical upgrades with user experience improvements. Their process usually starts by analyzing existing code and infrastructure to understand how it fits into the bigger business picture. From there, they make recommendations based on what needs to be rebuilt, what can be optimized, and how to keep everything running during the transition.
They support a mix of reengineering, migration, and redesign depending on the situation. That could mean rewriting large parts of a system to make it cloud-compatible, or adding new features using technologies like AI, blockchain, or IoT. Their team often works in phases to reduce downtime and allow teams to stay productive while updates are underway. With clients in industries like healthcare, logistics, and fintech, they’ve developed strategies to work around compliance and legacy architecture limitations without compromising on modernization goals.
Key Highlights:
- Handles system revamp with minimal downtime
- Offers migration to cloud and microservices setups
- Integrates emerging tech like AI and IoT into older systems
- Works across industries including healthcare and finance
- Uses incremental modernization strategies to avoid disruptions
Services:
- Legacy software reengineering and redesign
- UI/UX overhaul for outdated applications
- Cloud migration and DevOps integration
- Integration of modern technologies into legacy codebases
- Infrastructure optimization and system scalability planning
- Application audits and consulting
- Dedicated teams for modernization projects
- Staff augmentation for internal IT support
Contact Information:
- Website: www.cleveroad.com
- Address: USA, Claymont 2093 Philadelphia Pike #1655
- Phone: +1 415 231 3721
- Email: sales@cleveroad.com
- Facebook: www.facebook.com/cleveroadinc
- Twitter: x.com/cleveroad
- Linkedin: www.linkedin.com/company/cleveroad
9. Innowise
Innowise works with organizations to upgrade outdated software environments, helping them shift toward more scalable, secure, and agile systems. They support companies that are either stuck maintaining legacy applications or looking to revamp core infrastructure without causing major workflow disruptions. Their approach covers everything from audits and re-engineering to migration and ongoing support. The team often deals with situations where old code or monolithic architecture is slowing down progress or creating integration challenges with modern tools.
Their legacy modernization services are not one-size-fits-all. They tailor each engagement to the client’s current setup, using a mix of containerization, cloud migration, and microservices transformation. Whether it’s moving from on-prem to cloud platforms like AWS or overhauling user interfaces for outdated internal systems, they focus on making improvements without excessive risk. Innowise also brings in tools like DevOps, IoT, and data science where needed to extend the life of core software or make it work better in today’s tech landscape.
Key Highlights:
- Works with a range of legacy modernization paths including microservices, serverless, and cloud
- Supports gradual upgrades to avoid full system shutdowns
- Focuses on cost control through modular strategies
- Offers post-migration support and maintenance
- Combines traditional tech stacks with emerging technologies like blockchain and AI
Services:
- Legacy system audits and modernization consulting
- Code refactoring and software re-engineering
- UI/UX redesign and modernization
- Cloud migration (AWS, Azure, GCP)
- Transition from monolithic to microservices
- API development and integration
- Application containerization
- SAP cloud migration
- End-to-end testing and quality assurance
- Support and system maintenance after launch
Contact Information:
- Website: innowise.com
- Address: St. Petersburg FL 33702, 7901 4th St N STE 300
- Phone: +1 772 232 7337
- Email: contact@innowise.com
- Twitter: x.com/innowisegroup
- Linkedin: www.linkedin.com/company/innowise-group
10. SEVEN
SEVEN works with businesses and startups to update legacy software systems that no longer meet current operational demands or technical standards. Their team takes a phased and customized approach, usually starting with an in-depth system assessment and goal-setting workshop. They focus on identifying critical components within older systems and choosing the most effective path forward, whether that means replatforming, rearchitecting, or simply extending existing code with better structure. They emphasize minimal disruption and take care to preserve the value of what already works while replacing the parts that don’t.
What stands out is how they structure the modernization process. They guide clients through all the moving parts, from early assessments and strategy planning to testing and post-launch maintenance. Their work often includes integrating modern technology stacks and aligning the software with current business strategies, industry standards, and compliance requirements. For many projects, they focus on enabling scalability and efficiency, sometimes over full system rewrites, to avoid unnecessary cost or risk.
Key Highlights:
- Offers modular modernization instead of full rebuilds where possible
- Handles complex systems with step-by-step upgrade planning
- Focuses on both technical performance and long-term maintainability
- Prioritizes effective stakeholder communication and transparent cost models
- Flexible in choosing between rehosting, refactoring, or full redesign
Services:
- Legacy system audits and architecture assessments
- Modernization strategy and planning
- Replatforming, refactoring, or reengineering
- UI/UX redesign and user experience upgrades
- API development and system integration
- Cloud migration and containerization
- Compliance and security updates
- Testing, validation, and rollout support
- Post-modernization maintenance and improvements
- Dedicated team extension or full-cycle development support
Contact Information:
- Website: sevencollab.com
- Address: 347 Fifth Ave, Suite 1402-191 New York City, NY 10016, USA
- Phone: +1 917 997 50 99
- Facebook: www.facebook.com/sevencollab
- Twitter: x.com/sevencollab
- Linkedin: www.linkedin.com/company/sevencollab
11. ELEKS
ELEKS provides modernization services for legacy software systems across various industries, focusing on making outdated applications more scalable, maintainable, and secure. Their approach generally involves reworking the system architecture and updating the technology stack to meet current business needs. They integrate modern tools like cloud platforms, automation, and AI to improve system performance and adapt to ongoing operational demands. While doing so, they aim to preserve essential business logic and prevent disruption to core operations.
Their work typically includes cloud migration, security upgrades, and intelligent automation. The team uses their experience in areas like data engineering and AI to restructure systems in a way that supports better user experience and technical agility. For projects involving older platforms, they often begin with audits and feasibility analysis to decide the most cost-effective modernization path. ELEKS also operates with a nearshore delivery model, offering real-time collaboration across international teams while keeping project communication efficient.
Key Highlights:
- Over three decades of experience in complex enterprise systems
- Security-first approach with multiple certifications in place
- Uses AI and automation to modernize both architecture and workflows
- Offers flexible delivery from global offices with nearshore advantages
- Works with regulated industries like healthcare, finance, and logistics
Services:
- Legacy application reengineering
- System architecture modernization
- Cloud computing integration
- DevOps and infrastructure optimization
- AI, ML, and intelligent automation
- Software audit and risk assessment
- Cybersecurity and compliance upgrades
- Data platform restructuring and MLOps
- Application performance optimization
- UX redesign and service design consulting
Contact Information:
- Website: eleks.com
- Facebook: www.facebook.com/ELEKS.Software
- Twitter: x.com/ELEKSSoftware
- LinkedIn: www.linkedin.com/company/eleks
- Address: 625 W. Adams St., Chicago, IL 60661
- Phone: +1-708-967-4803
12. Vention
Vention offers legacy software modernization services that focus on transforming aging systems into modern, adaptable platforms. They work across industries like fintech, healthtech, ecommerce, and others, helping companies navigate the shift from outdated architecture to scalable, cloud-ready, and maintainable solutions. Their approach typically includes analyzing the current system’s limitations, identifying performance gaps, and mapping out a modernization plan. This could mean anything from backend refactoring to complete system rebuilds depending on business priorities.
Their engineers handle various tasks such as migrating legacy applications to the cloud, reengineering monolithic structures into microservices, or improving code quality through refactoring. The team also supports API integrations to ensure modernized systems work seamlessly with third-party tools and platforms. Alongside these technical efforts, Vention provides consulting to help organizations make informed decisions about the path forward, keeping both technical and business outcomes in focus.
Key Highlights:
- Two decades of experience in software modernization
- Strong presence across fintech, healthtech, and other regulated industries
- Offers both backend and architectural overhauls for legacy systems
- Delivers modernization projects using agile and DevOps practices
- Provides integration support for third-party systems and new tech
Services:
- Legacy code refactoring
- Application reengineering and rearchitecting
- Cloud migration and hybrid-cloud transition
- Legacy system consulting and strategy development
- API and service integration
- Infrastructure modernization
- UI/UX stability during backend upgrades
- Containerization and automation via DevOps tools
- Agile project management and continuous delivery
- System rebuilding or full platform replacement
Contact Information:
- Website: ventionteams.com
- Address: 575 Lexington Avenue, 14th Floor, New York, NY 10022
- Phone: +1 (718) 374-5043
- Email: hello@ventionteams.com
- Instagram: www.instagram.com/ventionteams
- Twitter: x.com/ventionteams
- Linkedin: www.linkedin.com/company/ventionteams
13. ManekTech
ManekTech supports businesses looking to bring outdated systems up to speed through a range of legacy software modernization services. Their team works with companies across different sectors, offering help with system upgrades, cloud migrations, UI/UX revamps, and codebase improvements. They often focus on aligning old systems with current business needs while reducing maintenance overhead and improving adaptability for future changes. Their approach typically involves analyzing existing applications and then developing a step-by-step strategy to update or restructure them.
The company delivers modernization projects using a mix of consulting, reengineering, and system migration services. Whether the task involves refactoring code, integrating cloud-based platforms, or transforming user interfaces, their focus stays on keeping the software relevant and efficient. ManekTech also supports clients through post-modernization services, offering ongoing system maintenance and performance monitoring to ensure updates continue to deliver value over time.
Key Highlights:
- Experience working with both startups and large enterprises
- Offers pre-discovery and consulting before initiating modernization
- Supports on-prem to cloud migration and system rearchitecture
- Provides continuous post-deployment maintenance and updates
- Covers modernization across multiple industries including finance, ecommerce, and legal tech
Services:
- Modernization consulting and technical audits
- Legacy platform reengineering and system redesign
- Cloud migration and infrastructure modernization
- UI/UX modernization and front-end updates
- Legacy system data migration
- Codebase cleanup and refactoring
- Application integration with APIs and third-party tools
- Ongoing support and system monitoring
- Mainframe to microservices conversion
- Backend performance optimization
Contact Information:
- Website: www.manektech.com
- Address: 4100 NW Loop 410, Suite 200, San Antonio, Texas, USA 78229
- Phone: +918511428441
- Email: info@manektech.com
- Facebook: www.facebook.com/ManekTech-191482567545069
- Instagram: www.instagram.com/manektech
- Twitter: x.com/manektech
- Linkedin: www.linkedin.com/company/manektech
14. Euvic
Euvic provides modernization services for businesses looking to upgrade their legacy systems without completely starting over. They work across a range of industries and focus on helping companies transition outdated platforms into modern, scalable, and more maintainable systems. Their team handles both technical and strategic components of these projects, including architecture planning, code migration, and platform transition. A common part of their process is to audit existing systems and map out a modernization blueprint that aligns with current business demands.
They operate using a hybrid delivery model with US-based project leaders and development teams primarily in Poland. This structure allows them to offer both technical depth and ongoing communication with clients. Whether it’s moving legacy apps to the cloud, integrating systems, or rebuilding user interfaces, their teams take a modular approach to limit downtime and reduce risk. Euvic also supports businesses after modernization is complete through infrastructure monitoring and continuous improvement practices.
Key Highlights:
- Operates with combined US leadership and Polish engineering teams
- Offers full end-to-end service from planning through deployment
- Handles complex system integrations alongside modernization work
- Works across industries including finance, retail, and healthcare
- Uses a modular approach to avoid major system disruption
Services:
- Legacy software modernization and infrastructure redesign
- Code migration to modern platforms
- System architecture consulting and planning
- UI/UX design updates for legacy systems
- Cloud-native development and cloud migration
- Software testing and performance audits
- System integration across platforms and services
- Managed DevOps and CI/CD pipeline setup
- AI, machine learning, and analytics integration
- Ongoing support, maintenance, and IT infrastructure monitoring
Contact Information:
- Website: www.euvic.com
- Address: 101 Hudson Street, 21st Floor Jersey City, NJ, 07302 United States of America
- Phone: +1 (201) 409-2342
- Email: sales-na@euvic.com
15. ScienceSoft
ScienceSoft focuses on helping organizations update and maintain legacy systems without unnecessary disruptions. Their approach to modernization includes a mix of system reengineering, architecture updates, and migration to new platforms, often cloud-based. They take into account the entire application lifecycle, offering not just modernization but long-term support once the new system is up and running. Their work typically begins with an assessment of the existing environment and then moves through planning, implementation, and testing.
They work across industries like healthcare, finance, and logistics, offering tailored solutions depending on the client’s infrastructure and technical debt. Their teams handle not only software refactoring but also integrations, performance improvements, and post-deployment stability. With experience in complex environments and regulatory-heavy sectors, they tend to emphasize security, maintainability, and compatibility in modernization efforts. They also provide help with post-launch support, scaling strategies, and gradual transitions from legacy environments to modern architectures.
Key Highlights:
- Offers full-cycle legacy application modernization
- Works across regulated and complex industries like healthcare and finance
- Emphasizes secure and scalable system transformation
- Provides long-term post-launch support and maintenance
- Experienced in both on-premise and cloud migration
Services:
- Legacy software modernization
- System refactoring and reengineering
- Migration to cloud platforms (AWS, Azure, Google Cloud)
- UI/UX upgrades for legacy interfaces
- Post-modernization system support
- Integration with third-party systems and APIs
- Application testing and quality assurance
- DevOps and CI/CD implementation
- Software development consulting
- Infrastructure and cybersecurity services
Contact Information:
- Website: www.scnsoft.com
- Address: 5900 S. Lake Forest Drive Suite 300, McKinney, Dallas area, TX 75070
- Phone: +1 214 306 6837
- Email: contact@scnsoft.com
- Facebook: www.facebook.com/sciencesoft.solutions
- Twitter: x.com/ScienceSoft
- Linkedin: www.linkedin.com/company/sciencesoft
16. Orion eSolutions
Orion eSolutions provides legacy software modernization services as part of their broader work in custom software and AI-driven solutions. Their focus in the US centers around helping organizations move away from outdated, hard-to-maintain systems and shift toward platforms that are easier to support, scale, and integrate with modern tools. Their approach often includes analyzing existing infrastructure, redesigning application architecture, and introducing automation or AI where it makes sense.
They take on both partial and full modernizations depending on what the system needs, including refactoring older code, rehosting applications, or rebuilding software components from scratch. Orion’s teams also help clients make long-term improvements to performance and maintainability, which can reduce reliance on legacy tech stacks. Their work tends to balance risk and continuity, aiming to keep systems running while change is being introduced in phases.
Key Highlights:
- Offers legacy software modernization in the US
- Focuses on phased transitions and minimal disruption
- Supports automation and AI adoption during modernization
- Helps reduce technical debt in long-term system planning
- Combines global delivery with US-based engagement
Services:
- Legacy application reengineering
- Cloud migration and rehosting
- Code refactoring and performance tuning
- Platform redesign and architecture updates
- Integration with modern APIs and services
- Automation and AI enhancements
- System testing and QA for legacy platforms
- Support and maintenance post-modernization
- Business logic extraction and reuse
- UX/UI updates for outdated systems
Contact Information:
- Website: orionesolutions.com
- Address: 570 E WILLIAM ST San Jose, CA 95112
- Phone: (+1) 647 -706 -7086
- Email: info@orionesolutions.com
- Facebook: www.facebook.com/OrioneSolutions11
- Instagram: www.instagram.com/orioneSolutions
- Twitter: x.com/orionesolutions
- Linkedin: www.linkedin.com/company/orion-esolutions
17. EffectiveSoft
EffectiveSoft works with businesses looking to modernize aging software systems and bring them in line with current technology and security expectations. Their approach generally focuses on taking legacy apps that are limited in flexibility or hard to maintain, and reworking them to be more scalable, easier to use, and compliant with modern standards. They offer several paths for modernization, including cloud migration, reengineering of code, or containerization, depending on the situation.
They also help address more specific areas like data modernization and improving the user interface of older systems, which are often outdated and hard to navigate. Their teams work across industries like healthcare, finance, and logistics, and they seem to take a structured approach to balancing system continuity with long-term improvements. Overall, their focus is more on practical changes than complete rewrites unless necessary, which helps businesses reduce risk while upgrading.
Key Highlights:
- Offers multiple modernization strategies including reengineering and rearchitecting
- Supports both cloud-native transformation and hybrid upgrades
- Focuses on scalability, security, and system agility
- Modernizes data handling to improve analytics and reporting
- Enhances user experience for legacy interfaces
Services:
- Cloud migration and application rehosting
- Code refactoring and software reengineering
- System rearchitecture for improved flexibility
- Data extraction, transformation, and modernization
- UI and UX redesign for older platforms
- Cross-platform adaptation and compatibility updates
- Legacy containerization and deployment improvements
- Accessibility and compliance updates
- DevOps integration for legacy systems
- Ongoing support after modernization
Contact Information:
- Website: www.effectivesoft.com
- Address: San Diego, California 4445 Eastgate Mall, Suite 200
- Phone: 1-800-288-9659
- Email: rfq@effectivesoft.com
- Facebook: www.facebook.com/EffectiveSoft
- Twitter: x.com/EffectiveSoft
- Linkedin: www.linkedin.com/company/effectivesoft
18. Brainhub
Brainhub is a software engineering company that supports modernization of legacy systems through practical, business-focused development work. They collaborate with clients to figure out what needs fixing, what can stay, and how to roll out improvements without breaking existing operations. Their approach tends to favor steady upgrades over large-scale rebuilds unless it’s necessary. Teams at Brainhub handle both front-end and back-end systems and bring a mix of software engineering, architecture, and DevOps to streamline the process.
What sets their work apart is their effort to align technical improvements with actual business pain points. They’re not just updating code for the sake of it, but focusing on things like slow release cycles, lack of integration, or scaling issues. Legacy app modernization at Brainhub typically involves codebase clean-up, upgrading outdated tech stacks, improving system reliability, and making applications more secure and cloud-ready. The work is built around a delivery process that emphasizes small, frequent releases, collaborative governance, and practical outcomes.
Key Highlights:
- Helps modernize systems while minimizing business disruption
- Focus on reducing technical debt and improving release speed
- Aligns tech changes with business goals
- Skilled in managing long-term legacy code cleanup
- Works with fast-scaling companies across multiple industries
Services:
- Legacy system audit and roadmap planning
- Code refactoring and architecture restructuring
- Cloud migration and DevOps automation
- UI/UX redesign for older applications
- Integration with modern APIs and tools
- Security hardening and performance tuning
- Ongoing development support for legacy platforms
- React, .NET, Node.js based application upgrades
- Full-stack engineering for web and mobile apps
- Collaborative team augmentation during modernization projects
Contact Information:
- Website: brainhub.eu
- Address: 25 SE 2nd Ave Ste 550 PMB 1203 Miami, FL 33131 United States
- Phone: +48 733 707 758
- Email: sales@brainhub.eu
- Facebook: www.facebook.com/brainhubapps
- Twitter: x.com/Brainhubeu
- Linkedin: www.linkedin.com/company/brainhub-pl
19. Sombra
Sombra is a software engineering and consulting company that handles modernization projects for aging applications. They focus on helping businesses reduce technical debt, improve performance, and bring legacy systems up to current standards without completely tearing everything down. Their team works across the software lifecycle – starting with system assessment and continuing through design upgrades, cloud migrations, and long-term maintenance. The goal is to make older systems easier to maintain, more secure, and compatible with modern infrastructure.
Their approach tends to lean toward practical fixes, often prioritizing business continuity and avoiding unnecessary rebuilds. They support cloud infrastructure migrations, performance tuning, UX improvements, and security updates. For teams struggling with slow deployments or rigid legacy stacks, Sombra offers phased modernization strategies that fit into existing workflows. They also bring experience from multiple industries like finance, healthcare, logistics, and SaaS, and tailor their methods depending on each organization’s technical maturity.
Key Highlights:
- Helps reduce technical debt and improve legacy system stability
- Works with cloud-native tools and industry-standard security practices
- Offers phased modernization without forcing full rebuilds
- Covers industries such as fintech, healthcare, logistics, and retail
- Supports long-term maintenance and continuous improvement
Services:
- Legacy system assessment and roadmap planning
- Cloud infrastructure migration (AWS, GCP)
- UX and UI redesign for outdated interfaces
- Technical debt reduction and refactoring
- Security upgrades following industry standards
- Performance optimization for older applications
- Agile development with DevSecOps integration
- Continuous improvement and post-modernization support
- Integration with AI and ML features where relevant
- Compliance with frameworks like ISO 27001, HIPAA, and SOC2
Contact Information:
- Website: sombrainc.com
- Address: 1550 Wewatta St, Denver, CO 80202, USA
- Phone: +17204594125
- Email: info@sombrainc.com
- Facebook: www.facebook.com/sombra.software
- Instagram: www.instagram.com/sombra_software
- Linkedin: www.linkedin.com/company/sombra-inc
20. SparxIT
SparxIT offers legacy software modernization services as part of its broader suite of digital transformation solutions. They help organizations update outdated systems by introducing modern technologies without overcomplicating the process. Their work typically involves refactoring old codebases, reengineering components, or shifting systems from traditional on-premise setups to cloud environments. For many companies, this means keeping critical business logic intact while removing long-standing limitations tied to aging software.
Their approach includes tailored strategies like microservice implementation, UI/UX redesign, DevOps adoption, and performance tuning. They also handle projects involving data migration, API upgrades, and platform re-architecture. Their modernization solutions are designed to support a range of industries, including fintech, retail, manufacturing, and healthcare. Rather than pushing complete overhauls from day one, SparxIT tends to guide clients through phased upgrades and practical architecture improvements based on actual use cases and business needs.
Key Highlights:
- Supports phased migration strategies and full rebuilds when needed
- Offers refactoring, reengineering, and re-platforming based on scope
- Works with a wide tech stack including cloud, AI, microservices, and blockchain
- Experience across sectors like healthcare, fintech, travel, and manufacturing
- Aligns modernization efforts with compliance and performance standards
Services:
- Legacy system assessment and consulting
- Application reengineering and code refactoring
- UI/UX modernization for better usability
- Cloud migration (AWS, Azure, GCP)
- DevOps implementation and automation
- API integration and upgrade
- Data modernization and migration
- Microservices architecture adoption
- Performance optimization and monitoring
- AI, ML, IoT, and blockchain integration for upgraded functionality
Contact Information:
- Website: www.sparxitsolutions.com
- Address: PMB #6020, 477 Madison Ave 6th FL, New York, NY 10022
- Phone: +1 (857) 242-9910
- Email: sumit@sparxit.com
- Facebook: www.facebook.com/sparxitsolutions
- Instagram: www.instagram.com/TeamSparxIT
- Twitter: x.com/TeamSparxIT
- Linkedin: www.linkedin.com/company/sparx-it-solutions
21. Taazaa
Taazaa works with companies looking to modernize their legacy systems without overhauling their entire business structure. They approach legacy application modernization with a practical mindset, balancing technical upgrades with real-world use cases. For organizations relying on outdated tools or platforms, Taazaa helps transition to modern solutions through refactoring, rebuilding, or integrating existing systems with new applications. Their process includes careful systems analysis, collaborative planning, and iterative development cycles designed to reduce risks and allow for early user feedback.
Their team provides support across different phases of modernization, from initial assessments and UX reviews to cloud migration and API integrations. Taazaa also brings in AI, IoT, and blockchain capabilities where relevant, but without making it the center of everything. Their focus tends to remain on improving performance, making operations more agile, and simplifying workflows. Whether for healthcare, finance, logistics, or other industries, they help companies update old systems to be more adaptable and sustainable going forward.
Key Highlights:
- Uses iterative design and development to reduce project risks
- Provides both full system rebuilds and incremental modernization
- Integrates legacy systems with new applications through automation
- Offers AI, IoT, and blockchain options when relevant to the business need
- Supports small businesses to enterprise-level organizations
Services:
- Legacy application assessment and UX review
- Code refactoring and architecture redesign
- Application integration and process automation
- Cloud migration and DevOps support
- ERP system development and integration
- Custom AI and machine learning solution development
- IoT implementation and data security planning
- Blockchain-based app development
- Product design and UI/UX modernization
- Ongoing support, QA, and product updates
Contact Information:
- Website: www.taazaa.com
- Address: 1780 Stoney Hill Dr., Suite A, Hudson, OH 44236
- Phone: +1 (888) 800-0016
- Email: info@taazaa.com
- Facebook: www.facebook.com/taazaainc
- Instagram: www.instagram.com/taazaainc
- Twitter: x.com/taazaainc
- Linkedin: www.linkedin.com/company/taazaa-inc
22. DICEUS
DICEUS provides legacy software modernization services for companies looking to update outdated systems without halting operations. Their approach starts with a detailed software audit to assess the current state of a system, identify technical risks, and uncover areas where modernization can bring value. From there, they define a strategy that might include refactoring old code, rebuilding core features, migrating to the cloud, or switching from monolithic structures to more agile microservices. Their focus tends to be on improving performance, security, and integration without unnecessary disruption.
They also support full-cycle modernization projects, offering assistance from initial planning through to post-deployment support. In many cases, they assist with complex migrations, redesigns, and system decommissioning while preserving access to legacy data. Their team works with various industries such as insurance, banking, and logistics, often customizing modernization efforts based on specific business domain requirements. With a flexible team structure and support for different cooperation models, DICEUS handles both straightforward and more specialized modernization scenarios.
Key Highlights:
- Performs detailed legacy system audits before proposing changes
- Supports migration to microservices, cloud platforms, or modern architectures
- Offers UI/UX improvements for legacy systems
- Helps preserve access to historical data during system decommissioning
- Works with domain-specific challenges in industries like banking and insurance
Services:
- Software audits and system analysis
- Legacy code refactoring and architecture redesign
- Cloud migration (AWS, Azure, GCP)
- Microservices transformation
- Custom feature development and integration
- Application decommissioning with data retention
- UI/UX updates for legacy platforms
- Project management and QA throughout modernization lifecycle
- Post-deployment support and maintenance
- Dedicated development teams and team extension options
Contact Information:
- Website: diceus.com
- Address: 2810 N Church St, Ste 94987, Wilmington, Delaware 19802-4447
- Phone: +19293091005
- Email: info@diceus.com
- Facebook: www.facebook.com/DICEUS
- Twitter: x.com/diceus_global
- Linkedin: www.linkedin.com/company/diceus
Wrapping Up
Modernizing legacy software isn’t just a tech decision – it’s often a turning point for how a company moves forward. Whether you’re stuck maintaining outdated platforms or hitting walls trying to scale, the right modernization partner can help untangle the mess without turning everything upside down. What’s clear from the companies on this list is that there’s no one-size-fits-all fix. Some specialize in deep system overhauls, others work incrementally with what’s already there. Most importantly, they meet you where you are, not where a glossy brochure says you should be.
If there’s one takeaway here, it’s this: legacy software doesn’t have to be a dead weight. With the right mix of planning, development support, and business context, it can become something useful again, maybe even strategic. So whether you’re looking to extend the life of core systems, clean up old code, or finally move things to the cloud, there’s a team out there that’s already done it dozens of times and knows how to do it without breaking things. Just pick the one that fits your pace, your stack, and your tolerance for chaos.
