Top Application Modernization Services
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$25,000+$25 - $49 / hr10 - 49
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See all 2 projectsITendo is a development company specializing in creating digital platforms and marketplace solutions. Clients praise their innovative approach, understanding of industry needs, and commitment to delivering high-quality work on time. They have received an overwhelming 100% positive feedback, with reviewers highlighting impressive project management skills and effective use of modern tools such as Jira, Slack, and Figma for efficient communication and tracking.
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$25,000+$25 - $49 / hr10 - 49Bengaluru, India
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See all 7 projectsTechpearl Software Pvt Ltd. is a versatile software development company known for creating customized solutions, including mobile applications, web portals, and enterprise B2B platforms. Across their reviews, 80% of clients praised their responsiveness and ability to deliver projects on time. However, 40% noted room for improvement in requirements gathering and project management processes.
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$5,000+$25 - $49 / hr10 - 49Noida, India
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See all 2 projectsGrepix Infotech Pvt.Ltd. is a software development company specializing in custom mobile app solutions, particularly for iOS platforms. The company's reviews are overwhelmingly positive, highlighting their punctuality and strong project management skills. Noteworthy is their integrity and precision in estimates, with 100% of reviewers expressing satisfaction with their deliverables and commitment.
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$5,000+$100 - $149 / hr2 - 9Northampton, England
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See all 4 projectsFull Metal Software is a bespoke software development company known for its adept handling of software transfer, data migration, and custom software solutions. Clients commend their seamless communication, punctuality, and budget adherence, with 100% positive feedback highlighting their effective project management and client-centric approach. Approximately 75% of reviewers specifically praise the ease and professionalism brought to complex projects.
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$25,000+$25 - $49 / hr10 - 49Burgas, Bulgaria
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See all 3 projects42px is a software development company specializing in front-end development with expertise in React and Typescript. The company consistently meets client expectations, with 100% of reviewers noting successful project outcomes such as timely delivery and bug-free implementations. Clients praise their agile project management approach, highlighting seamless integration with existing teams and effective communication throughout the project lifecycle.
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$5,000+$25 - $49 / hr10 - 49St. Petersburg, FL
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See all 1 projectseSquall builds custom digital platforms, AI-powered solutions, and enterprise software for the construction, healthcare, and insurance industries. We develop construction management systems,
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$5,000+$25 - $49 / hr10 - 49
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See all 2 projectsQualitas IT LLC is a software development company specializing in HR management tools, web development, and graphic and architecture design. They have received consistently positive feedback, with clients noting their effective integration into teams, impressive project management, and innovative contributions. Reviewers frequently highlight their design quality and responsiveness, with no significant areas for improvement mentioned by the majority.
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$10,000+$50 - $99 / hr50 - 249Eschborn, Germany
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See all 4 projectsUHP Software GmbH is a software development firm specializing in app creation, test automation, and scalability solutions. The company has received overwhelmingly positive feedback, with clients appreciating their expertise, creativity, and ability to improve over time. Approximately 67% of reviewers highlight their impressive project management and communication skills, while 33% note their problem-solving and technical proficiency.
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$25,000+$25 - $49 / hr250 - 999Newark, CA
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See all 4 projectsArgusoft is a software development company specializing in full-stack development using technologies like Java, Angular, and .NET Core. Reviews indicate positive feedback, with over 90% citing their strong project management and communication skills. Clients praise their flexibility, dedication, and ability to deliver complex solutions efficiently, with many highlighting their impressive handling of frontend tasks and commitment to project goals.
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$25,000+$25 - $49 / hr10 - 49Zagreb, Croatia
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See all 8 projectsIntellexi is a software development company known for delivering high-quality, tailored software solutions across various industries, including finance, telecommunications, and IT services. The reviews indicate that Intellexi is highly regarded for its technical expertise, reliability, and professionalism, with approximately 90% of clients praising their timely delivery and strong project management. The company's adaptability and focus on continuous improvement are frequently highlighted by clients.
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Undisclosed$25 - $49 / hr50 - 249Yerevan, Armenia
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See all 3 projectsInomma is a mobile app and web development company, known for their expertise in developing comprehensive solutions from concept to launch. Their reviews indicate a strong focus on professionalism, proactive communication, and timely delivery. Overall, 100% of clients express satisfaction with Inomma's performance, particularly highlighting their attention to detail and ability to meet deadlines and budgets effectively.
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$25,000+$50 - $99 / hr10 - 49Split, Croatia
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See all 9 projectslittlecode is a proficient software development company specializing in Enterprise App Modernization and Digital Transformation services. Their reviews highlight a strong alignment with client values, impressive code quality, and high coding standards. Notably, 100% of the feedback emphasizes their competence and flexibility in resource management.
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$10,000+$25 - $49 / hr10 - 49
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See all 2 projectsMINT IT is a mobile app development company known for its expertise in delivering high-quality applications using technologies like Flutter, Node.js, and MongoDB. Clients consistently praise their effective communication, adherence to deadlines, and the smooth workflow they provide, with 100% of reviews highlighting their impressive team quality and process management.
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$25,000+$100 - $149 / hr10 - 49Troy, NY
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See all 2 projectsGavant Software, Inc. is a software development company specializing in creating customized solutions for intricate business needs. Clients consistently praise their partnership approach, with 100% of reviewers highlighting Gavant's deep understanding of complex systems and commitment to client success. The company is renowned for improving operational efficiency, with one client reporting a 50% reduction in billing processing time.
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$5,000+$25 - $49 / hr10 - 49Ho Chi Minh City, Vietnam
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See all 12 projectsSosene Software is a versatile software development company specializing in custom software solutions, including school and e-commerce management systems. Their reviews highlight a strong customer-centric culture, with 100% of reviews mentioning their exceptional project management and customer satisfaction. Clients appreciate their professionalism, proactive communication, and ability to deliver projects on time while maintaining high-quality standards.
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$10,000+$25 - $49 / hr10 - 49Praha, Czech Republic
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See all 8 projectsKOALA42 is a software development company specializing in web and mobile applications, system integrations, and cloud-based solutions. Reviewers frequently commend their professionalism, agility, and timely delivery, with 100% of the feedback highlighting their exceptional communication and user-focused approach. Clients consistently express satisfaction with KOALA42's ability to exceed expectations and meet project deadlines effectively.
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$1,000+< $25 / hr10 - 49
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See all 2 projectsFlaminTech LLP is a web and application development company specializing in custom eCommerce solutions. Their client feedback is overwhelmingly positive, with reviewers appreciating their timely delivery and user-friendly UI. Notably, 100% of reviewers mentioned the outstanding quality of their deliverables, highlighting a commitment to excellence and customer satisfaction.
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$10,000+$25 - $49 / hr50 - 249
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See all 4 projectsErbis is a full-stack development company specializing in cloud services, offering business analysis, database automatization, and application development across various platforms. The feedback overwhelmingly highlights their technical expertise and strong project management, with approximately 90% of reviews praising their ability to meet deadlines and provide valuable improvements. Erbis is noted for its proactive communication and partnership approach, with around 80% of reviews emphasizing their collaborative nature and adaptability.
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$5,000+$25 - $49 / hr10 - 49Kyiv, Ukraine
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See all 5 projectsAltSolution is a versatile software development company specializing in creating CRM systems, platforms, and cloud-based solutions. Overall, 100% of reviewers praised their project management skills, timely delivery, and dedication to quality, resulting in successful and scalable solutions. Approximately 80% of reviewers highlighted their proactive communication and adaptability to changing needs, which were central to their positive experiences.
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$25,000+$150 - $199 / hr2 - 9Orlando, FL
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See all 3 projectsGrata Software is a software development and IT consulting company known for its expertise in managing web applications, improving system reliability, and providing architecture guidance. With a focus on responsive support and quality results, Grata Software has received positive feedback from clients, with 100% praising their technical knowledge and dedication. Clients appreciate their ability to reduce stress and improve system resilience, although some desire more visibility into project milestones.
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$5,000+$25 - $49 / hr50 - 249Kyiv, Ukraine
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See all 11 projectsSprinterra is a versatile software development company specializing in creating customized applications across various industries, including real estate, finance, and healthcare. Their reviews reveal a strong emphasis on agile project management and excellent communication, with 100% of reviewers highlighting their responsiveness and ability to meet deadlines. Clients appreciate their technical expertise and commitment to delivering high-quality solutions, often noting their cultural fit and alignment with business needs.
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$25,000+$25 - $49 / hr250 - 999
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See all 1 projectsEvolve Blue is a web development and SEO company that excels in creating mobile-responsive websites and managing search engine optimization to boost business visibility. The reviews indicate a high level of satisfaction, with 100% positive feedback, highlighting effective communication, transparency regarding costs, and a 50% business increase post-engagement. Clients appreciate their patience and ability to offer beneficial suggestions.
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$25,000+Undisclosed10 - 49London, England
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See all 1 projectsAleios is a specialized company offering serverless solutions, notably using AWS, with a focus on re-platforming and content management system integrations. Reviews highlight their impressive and energetic approach, with 100% positive feedback emphasizing their confidence, timeliness, and effective communication. Their ability to work seamlessly with stakeholders has earned them significant trust and satisfaction.
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$10,000+$50 - $99 / hr2 - 905, Andorra
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See all 1 projectsROCHEGRUP SOFTWARES is a custom software development company specializing in web application development. Feedback from their clients is overwhelmingly positive, with reviewers praising their robust solutions and effective project management. Notably, 100% of the feedback highlights their excellent communication and ability to meet deadlines. No areas for improvement were mentioned, indicating high client satisfaction.
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$10,000+Undisclosed50 - 249Sydney, Australia
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See all 1 projectsTeam 400 AI is a software development company specializing in building cross-platform applications using Xamarin architecture. Reviews highlight their strong project management, flexibility, and comprehensive skillset, with 100% of the feedback being positive. Clients appreciate their ability to incorporate customer feedback and deliver functional solutions that enhance growth potential.
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Undisclosed$25 - $49 / hr10 - 49
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See all 6 projectsImpliway is a technology consulting firm specializing in the implementation and customization of Odoo ERP systems. The company receives favorable feedback for its technical expertise, flexibility, and commitment to project timelines, with approximately 83% of reviewers highlighting their excellent communication and customer service. While project management is generally well-received, some suggest minor improvements in planning and milestone reporting.
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$50,000+Undisclosed1,000 - 9,999Hyderabad, India
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See all 6 projectsCigniti Technologies Inc. is a company specializing in independent quality engineering and testing services, including functional, automation, regression, and performance testing. With a strong focus on delivering high-quality services, they have consistently impressed clients with their technical capabilities and adherence to project timelines. Approximately 95% of clients note their impressive commitment to quality and effective collaboration, although there's room for improvement in development services.
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$25,000+$25 - $49 / hr10 - 49Chicago, IL
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See all 9 projectsTwinCore offers services such as web-based software development, design, support, and enhancement, with a strong focus on Application Modernization and IT Modernization. Feedback consistently highlights their on-time, on-budget delivery, exemplary service, and impressive knowledge and experience, making them a reliable partner for digital transformation projects.
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$10,000+$50 - $99 / hr50 - 249Coral Springs, FL
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See all 6 projects2am.tech is a company specializing in Enterprise Application Modernization, delivering services such as mobile and web app development, software engineering, and project management. The overall feedback is overwhelmingly positive, with clients praising their creativity, reliability, and ability to deliver on time, resulting in seamless and maintainable solutions. An impressive 100% of reviewers commend their flexibility and alignment with company values.
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$10,000+$100 - $149 / hr10 - 49Berlin, Germany
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See all 3 projectsBananapie GmbH is a Flutter development company praised for its exceptional communication and teamwork. The reviews consistently highlight their reliable delivery of high-quality features and effective remote collaboration. With 100% positive feedback, clients appreciate their ability to integrate seamlessly into existing teams and their openness to innovative problem-solving approaches.
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List of the Top 15 Legacy Modernization Services
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$25,000+$50 - $99 / hr250 - 999Miami, FL
Ability to deliver
35.8/40.020/20 Reviews10/10 Clients & Experience5.8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr1,000 - 9,999New York, NY
Ability to deliver
37.8/40.020/20 Reviews10/10 Clients & Experience7.8/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$100,000+$50 - $99 / hr250 - 999Miami, FL
Ability to deliver
34.7/40.019/20 Reviews10/10 Clients & Experience5.7/10 Market PresenceService focus
25% Enterprise App Modernization75% Other -
$10,000+$25 - $49 / hr1,000 - 9,999Southborough, MA
Ability to deliver
32.1/40.016.6/20 Reviews10/10 Clients & Experience5.5/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
UndisclosedUndisclosed1,000 - 9,999Atlanta, GA
Ability to deliver
34/40.018.8/20 Reviews10/10 Clients & Experience5.2/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr250 - 999Wrocław, Poland
Ability to deliver
31.6/40.015.8/20 Reviews10/10 Clients & Experience5.8/10 Market PresenceService focus
40% Enterprise App Modernization60% Other -
$5,000+$50 - $99 / hr10 - 49Brno, Czech Republic
Ability to deliver
31.3/40.017.8/20 Reviews9.8/10 Clients & Experience3.7/10 Market PresenceService focus
60% Enterprise App Modernization40% Other -
$10,000+$50 - $99 / hr250 - 999Sacramento, CA
Ability to deliver
30.8/40.016.4/20 Reviews10/10 Clients & Experience4.5/10 Market PresenceService focus
80% Enterprise App Modernization20% Other -
$5,000+< $25 / hr1,000 - 9,999
Ability to deliver
30.7/40.016.2/20 Reviews10/10 Clients & Experience4.5/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$100,000+$50 - $99 / hr1,000 - 9,999Oakland, CA
Ability to deliver
30.5/40.015.2/20 Reviews8.8/10 Clients & Experience6.6/10 Market PresenceService focus
45% Enterprise App Modernization55% Other -
$25,000+$25 - $49 / hr50 - 249Agoura Hills, CA
Ability to deliver
36.4/40.020/20 Reviews10/10 Clients & Experience6.4/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$50 - $99 / hr50 - 249București, Romania
Ability to deliver
33.3/40.019.6/20 Reviews10/10 Clients & Experience3.7/10 Market PresenceService focus
35% Enterprise App Modernization65% Other -
$100,000+$150 - $199 / hr50 - 249Southborough, MA
Ability to deliver
30.1/40.015.8/20 Reviews10/10 Clients & Experience4.3/10 Market PresenceService focus
50% Enterprise App Modernization50% Other -
$10,000+$25 - $49 / hr250 - 999Beijing, China
Ability to deliver
35.4/40.019.6/20 Reviews9.1/10 Clients & Experience6.7/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$25,000+$25 - $49 / hr1,000 - 9,999Orlando, FL
Ability to deliver
35.6/40.020/20 Reviews10/10 Clients & Experience5.6/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$10,000+$50 - $99 / hr250 - 999Hudson, OH
Ability to deliver
33.5/40.017.2/20 Reviews9.8/10 Clients & Experience6.5/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$150 - $199 / hr10 - 49Littleton, CO
Ability to deliver
31.8/40.017.6/20 Reviews10/10 Clients & Experience4.2/10 Market PresenceService focus
45% Enterprise App Modernization55% Other -
$1,000+< $25 / hr250 - 999Hanoi, Vietnam
Ability to deliver
34.8/40.017/20 Reviews9.7/10 Clients & Experience8/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$25,000+$150 - $199 / hr50 - 249Claymont, DE
Ability to deliver
33.3/40.016.6/20 Reviews10/10 Clients & Experience6.7/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
37.2/40.020/20 Reviews10/10 Clients & Experience7.2/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Kraków, Poland
Ability to deliver
35.2/40.019/20 Reviews10/10 Clients & Experience6.2/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Atlanta, GA
Ability to deliver
32.3/40.016.8/20 Reviews10/10 Clients & Experience5.5/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
34/40.017.8/20 Reviews10/10 Clients & Experience6.2/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$5,000+$50 - $99 / hr250 - 999London, England
Ability to deliver
31.6/40.016.6/20 Reviews10/10 Clients & Experience5/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$100 - $149 / hr10 - 49Costa Mesa, CA
Ability to deliver
32.6/40.018.6/20 Reviews10/10 Clients & Experience4/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr50 - 249Miami, FL
Ability to deliver
31.5/40.017.2/20 Reviews10/10 Clients & Experience4.3/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$25,000+$25 - $49 / hr1,000 - 9,999São Paulo, Brazil
Ability to deliver
33.4/40.016.6/20 Reviews9.9/10 Clients & Experience7/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
31.4/40.016.4/20 Reviews10/10 Clients & Experience5/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$100 - $149 / hr250 - 999London, England
Ability to deliver
28.2/40.016.2/20 Reviews7.8/10 Clients & Experience4.2/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$25,000+$25 - $49 / hr250 - 999Kropyvnytskyi, Ukraine
Ability to deliver
34.2/40.018.8/20 Reviews10/10 Clients & Experience5.4/10 Market PresenceService focus
10% Enterprise App Modernization90% Other
Top App Modernization Agencies
App modernization companies upgrade, refactor, or re-platform legacy software so it performs like a modern, cloud-ready application. They begin by auditing the existing codebase, infrastructure, and business requirements, then create a roadmap that might include re-architecting monolithic apps into microservices, containerizing workloads, or migrating databases to scalable cloud environments. Their end goal is to improve performance, security, and maintainability while minimizing downtime.
Most firms deliver a mix of strategic and technical services, such as:
- Legacy code assessment and technical debt analysis
- Re-platforming (e.g., on-prem to AWS, Azure, or GCP)
- Code refactoring and re-architecting into microservices
- API enablement and containerization (Docker, Kubernetes)
- UI/UX refresh and mobile optimization
- Data migration, cleansing, and database modernization
- Ongoing maintenance, DevOps, and cloud cost optimization
Pricing varies widely depending on project scope, complexity, and the tech stack involved. Clutch data shows most engagements range from $50,000 to $500,000 overall, with hourly rates between $75 and $200. Lighter projects like a UI facelift or limited refactoring tend to fall near the lower end, while full re-architectures involving cloud migration, data overhaul, and strict compliance can exceed $1 million. Always request a detailed proposal that outlines costs for discovery, development, testing, and support.
When choosing the best right app modernization for your business, consider these:
- Review expertise: Look for case studies that mirror your tech stack (Java, .NET, PHP) and industry compliance needs.
- Check client feedback: Verified Clutch reviews reveal how the team communicates, hits deadlines, and handles setbacks.
- Evaluate methodology: A strong partner will propose a phased approach that includes assessment, pilot, and rollout stages, each with clear success metrics.
- Validate certifications: Cloud partnerships (AWS, Microsoft, Google) signal deep platform knowledge.
- Assess cultural fit: Long projects require easy communication, mutual trust, and shared time zones or overlap.
These are some of the red flags that you should watch for when hiring an app modernization company:
- Guaranteed timelines before an audit: Accurate estimates require a code and infrastructure review.
- Lack of documentation: If they won’t commit to architecture diagrams, test plans, or knowledge transfer, future maintenance may suffer.
- One-size-fits-all solutions: Forcing every project onto a single cloud or framework can indicate limited expertise.
- Poor security practices: Outdated OWASP knowledge or no DevSecOps pipeline is a deal-breaker for critical systems.
- Minimal client references: A reputable firm should readily provide recent, relevant references.
Here are some questions you can ask app modernization companies before hiring them:
- Which modernization strategies (rehost, refactor, re-architect) do you recommend for our stack, and why?
- Can you share success metrics from similar projects—e.g., performance gains or cost reductions?
- What is your approach to minimizing downtime during migration?
- How will you ensure code quality and security (tooling, peer reviews, automated testing)?
- What support and knowledge-transfer do you provide after launch?
- How do you handle scope changes and unforeseen legacy issues?
Partnering with specialists accelerates time-to-value. Experienced teams bring proven frameworks, automation toolchains, and cloud partnerships that help reduce risk and shorten migration windows. Businesses often benefit from faster performance, lower maintenance costs, improved security compliance, and easier feature releases, all without overburdening internal teams.
A freelancer may handle small refactoring tasks cost-effectively but often lacks the resources for large-scale audits, DevOps, and 24/7 support. Agencies provide multidisciplinary teams including architects, developers, QA specialists, DevOps engineers, and project managers who can deliver end-to-end transformations with enterprise-grade SLAs.