Top Application Modernization Services
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$250,000+$150 - $199 / hr10 - 49Oklahoma City, OK
Services provided
See all 1 projectsPhase 2 is a software development company specializing in mobile platform solutions, particularly for sectors requiring remote accessibility. They have been praised for their project management skills and effective communication, with an estimated 800 industry members utilizing their app. A significant 100% of reviewers value their ongoing support and recommend discussing project scopes thoroughly.
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$5,000+$25 - $49 / hr50 - 249Montevideo, Uruguay
Services provided
See all 8 projectsGeneXus Consulting is a software development company specializing in custom development, digitization, and system integration using proprietary technologies. Reviews of GeneXus Consulting reveal a strong emphasis on effective project management and professionalism, with 70% of clients praising their proactive approach to problem-solving and project deadlines. However, 30% have noted areas for improvement in communication and bug testing. Overall, they are commended for their adaptability and collaboration.
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$50,000+< $25 / hr50 - 249Kazhakkoottam, India
Services provided
See all 12 projectsXminds Infotech is a versatile software development company offering web, mobile app, and backend development services. They receive overwhelmingly positive feedback, with approximately 90% of reviews highlighting their technical expertise, responsiveness, and effective communication. Clients appreciate their commitment to deadlines and quality, although some mention minor areas for improvement in QA processes and communication.
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$1,000+$25 - $49 / hr10 - 49Lungsod Quezon, Philippines
Services provided
See all 1 projectsDecode Technologies is a technology solutions company specializing in AI chatbot and CRM system development. Overall feedback highlights their efficiency and professionalism, with 100% of reviews noting their impact on operational efficiency and candidate experience. The company is praised for fast responses and timely delivery, with no areas for improvement mentioned.
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$10,000+$25 - $49 / hr50 - 249New Delhi, India
Services provided
See all 3 projectsNablasol is a custom software development company known for providing tailored solutions such as integrations and automation tools. Across their reviews, they receive positive feedback for responsiveness and team cohesion, with approximately 100% of reviewers appreciating their alignment with company values and cultural fit. However, some noted minor project delays and initial resource allocation challenges.
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Undisclosed$25 - $49 / hr2 - 9Mumbai, India
Services provided
See all 5 projectsVirtual Splat Software Pvt. Ltd. is a custom software development company specializing in ERP systems and related technologies. Across their reviews, they are praised for their commitment, timely delivery, and ability to meet customized client needs, with a notable 100% positive feedback rate. However, some clients suggest improvements in documentation and team expansion.
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$25,000+$150 - $199 / hr10 - 49St. Louis, MO
Services provided
See all 1 projectsAlliance Systems is a technology solutions provider specializing in web development and digital marketing strategies. The company receives overwhelmingly positive feedback, with clients praising their sophisticated technology solutions, effective project management, and flexibility, leading to notable sales increases. Approximately 100% of reviewers highlight their fair pricing and exceptional service, underscoring their value and reliability as a partner.
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$5,000+$25 - $49 / hr50 - 249Kakkanad, India
Services provided
See all 18 projectsSayOne Technologies is a versatile software development company specializing in e-commerce, mobile app, and web development services, with a strong foundation in technologies like Python and Django. Reviews reveal 100% positive feedback, emphasizing their effective communication, timely delivery, technical expertise, and client satisfaction. Approximately 30% of reviewers appreciate their project management skills, highlighting their dedication to meeting expectations and openness to feedback.
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$25,000+$25 - $49 / hr10 - 49Yerevan, Armenia
Services provided
See all 3 projectsCodeInno is a software development company specializing in creating customized digital solutions, including project management platforms and web applications. Their clients consistently praise their exceptional project management skills, flexibility in communication, and ability to deliver innovative and high-quality results. Approximately 100% of the reviews highlight CodeInno's dedication to understanding client needs and implementing effective solutions that align with their goals.
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$5,000+$150 - $199 / hr10 - 49Vienna, VA
Services provided
See all 1 projectsAtigro is a branding and communication agency known for crafting clear and impactful narratives, particularly in complex fields. The reviews highlight a seamless collaboration process and an ability to distill complex ideas into concise messaging, with 100% of feedback reflecting positive experiences. Clients commend Atigro's personalized approach and deep understanding of branding challenges, although there's a suggestion for clearer service segmentation.
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$50,000+$100 - $149 / hr2 - 9
Services provided
See all 2 projectsAppnomics.io, previously referred to as CreativeGray in reviews, is a mobile application development company noted for delivering user-centric solutions. 100% of the reviews highlight their effective project management and professional expertise, and no areas for improvement were identified. Clients commend their thoughtful design process and seamless workflow, particularly in synchronizing remote teams and consulting domain experts when necessary.
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$50,000+$50 - $99 / hr10 - 49Timișoara, Romania
Services provided
See all 1 projects[e-spres-oh] is a software engineering company known for its ability to integrate seamlessly with clients' teams, offering services that include enhancing data integration using Ruby on Rails. The company is praised for its strategic acumen and responsiveness, with 100% of feedback highlighting their strong partnership and proactive approach, although some mention the need for occasional prompting in handling bugs.
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$10,000+$50 - $99 / hr10 - 49
Services provided
See all 1 projectsWBPRO LLC is an app development company specializing in software solutions, particularly for the insurance industry. The company is praised for its top-notch skills and effective project management, with 100% of reviewers highlighting their accessibility and flexibility. While they have a learning curve with unfamiliar applications, their ability to adapt and provide industry-specific insights makes them highly recommended.
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$50,000+$150 - $199 / hr10 - 49Birmingham, AL
Services provided
See all 1 projectsSigao Studios is a software development company known for creating tailored web-based platforms, such as those for specialized fields like speech-language pathology. The feedback highlights their strong project management and effective communication, with 100% of the review focusing on their ability to meet deadlines, accommodate changes, and ask clarifying questions. Overall, customer satisfaction is high with no identified areas for improvement.
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$10,000+$50 - $99 / hr10 - 49Kraków, Poland
Services provided
See all 10 projectsScore Digital is a versatile software development company providing services such as mobile and web application development, UX/UI design, and ERP systems. Their reviews highlight a consistent theme of effective communication and timely project delivery, with 100% of feedback noting their professionalism and ability to handle complex projects efficiently. Around 50% of reviewers commend their technical expertise and adaptability to client needs.
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$5,000+$50 - $99 / hr10 - 49
Services provided
See all 7 projectsYR-Solutions is a versatile app development company specializing in coding, frontend development, and no-code app solutions. The company is highly praised for its professionalism, timely delivery, and excellent customer service, with 100% of reviews highlighting these strengths. Clients consistently commend their technical expertise and value-cost alignment, with 40% noting their impressive responsiveness and communication. YR-Solutions excels in delivering clean, functional products, with reviewers expressing overall satisfaction and ongoing project engagement.
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UndisclosedUndisclosed50 - 249Wrocław, Poland
Services provided
See all 4 projectsAvra Software is a software development company specializing in Java and enterprise solutions. The reviews indicate a consistent record of delivering high-quality, innovative software solutions across various industries, with 100% positive feedback on their adaptability and reliability. Clients frequently commend their ability to meet deadlines and their stable, skilled team.
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$25,000+$150 - $199 / hr50 - 249Norcross, GA
Services provided
See all 2 projectsThis Dot is a technology company specializing in front-end development and JavaScript SDK design. Review feedback is overwhelmingly positive, highlighting their expertise in developer tools and strong communication skills, with 100% of reviewers expressing satisfaction. Clients appreciate their commitment to community involvement and regard them as a rare find in the industry.
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$25,000+$25 - $49 / hr50 - 249Praha, Czech Republic
Services provided
See all 1 projectsWhirr Crew s.r.o. is a development company specializing in UI migration to React and mobile application development using React Native. The company is praised for being proactive, humble, and professional, with all deliverables meeting project objectives. A significant 100% of the feedback highlights their value for money and proximity to clients as key advantages.
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$50,000+$50 - $99 / hr50 - 249T'bilisi, Georgia
Services provided
See all 2 projectsOptime is a software development company specializing in video, streaming, and media processing solutions. The company has consistently received positive feedback from clients, with reviews highlighting their technical expertise in low-latency video streaming and media codec applications. Approximately 100% of the feedback underscores Optime's adept project management and effective collaboration with clients, demonstrating their ability to meet and exceed performance and quality objectives.
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$1,000+$25 - $49 / hr2 - 9
Services provided
See all 1 projectsrozwoj-oprogramowania.pl is a software development company specializing in creating automated systems using technologies like Java, Spring Boot, and Selenium. The company received positive feedback, with 100% of reviewers noting their timely project completion and effective problem-solving skills. Clients appreciated the smooth project management and communication, emphasizing the developer’s ability to resolve technical challenges efficiently.
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$1,000+< $25 / hr10 - 49
Services provided
See all 7 projectsAgilsys Software Labs Pvt. Ltd. is a versatile company specializing in Enterprise Application Modernization, offering comprehensive solutions in API development, full-stack application development, and testing automation. With 100% positive feedback highlighting their technical expertise and proactive problem-solving, 90% of reviewers commend their timely project delivery and adaptability. Their commitment to digital transformation and software modernization stands out as a significant strength.
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$1,000+$25 - $49 / hr1,000 - 9,999Łódź, Poland
Services provided
See all 7 projectsTransition Technologies PSC is a versatile IT services company specializing in product lifecycle management (PLM), data migration, IoT solutions, and software development. The company is praised for its expertise, flexibility, and commitment to delivering projects on time and within budget. Approximately 85% of reviewers highlight their technical skills and problem-solving capabilities, though some note the need for more experienced staff due to rapid growth.
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$5,000+$50 - $99 / hr50 - 249Warszawa, Poland
Services provided
See all 2 projectsSavangard is a technology solutions provider specializing in electronic workflow systems and payment infrastructure. Their services are highly praised, with 100% positive feedback highlighting their flexibility, effective project management, and on-time delivery. Around 50% of reviewers noted their good value for cost, while areas for improvement were minimal.
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$5,000+$25 - $49 / hr10 - 49Kraków, Poland
Services provided
See all 1 projectsSoftelnet is a technology solutions provider specializing in Java-based system integrations for the healthcare sector. According to customer reviews, they maintain a high level of professionalism, delivering stable, high-quality products with efficient communication and adherence to deadlines. The customer feedback is 100% positive, highlighting their flexibility and excellent documentation.
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$10,000+$150 - $199 / hr10 - 49Roswell, GA
Services provided
See all 7 projectsSentry IT, LLC is a company specializing in Enterprise Application Modernization and IT Modernization services. With a remarkable 100% positive feedback rate, clients commend their exceptional project management, attention to detail, and commitment to success. Approximately 60% of reviewers highlight their transformative impact on operations, leading to improved efficiency and a competitive edge.
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$5,000+$25 - $49 / hr10 - 49Karachi, Pakistan
Services provided
See all 4 projectsGYB Commerce is a web development and digital marketing company specializing in website design, development, and ongoing support, as well as social media marketing and SEO. Their clients consistently highlight their commitment, trustworthiness, and responsiveness, with approximately 100% expressing satisfaction with project outcomes and management. Opportunities for improvement are minimal, with a few clients suggesting clearer communication regarding timelines.
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$5,000+$25 - $49 / hr50 - 249Troy, MI
Services provided
See all 20 projectsOne Team US LLC is a versatile software development company specializing in ERP implementations, mobile app development, and custom software solutions. Client reviews reflect a 100% satisfaction rate, praising their efficient project management, responsive communication, and ability to deliver high-quality results on time. Many clients value their local presence and exceptional understanding of business needs, with 80% highlighting their impressive communication and project handling capabilities.
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$10,000+$25 - $49 / hr10 - 49Dnipropetrovs'k, Ukraine
Services provided
See all 3 projectsUnicreo is a software development company specializing in creating web and app-based solutions, particularly using technologies like WebRTC, .NET, and Node.js. The company's reviews highlight a 100% satisfaction rate, with clients praising their dedication, flexibility, and strong analytical skills. Reviewers frequently note their ability to adapt to client needs, though some mention room for improvement in feedback openness and task complexity estimation.
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$10,000+$100 - $149 / hr10 - 49Madrid, Spain
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See all 2 projectsEtéreo is a software development company specializing in frontend architecture, UX/UI design, and agile project management. Reviews consistently highlight their high performance, outstanding communication, and innovative, business-oriented solutions. Impressively, 100% of reviewers noted significant improvements in project outcomes, including a 45% increase in conversion rates and a 30% boost in online sales.
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List of the Top 15 Legacy Modernization Services
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$5,000+< $25 / hr1,000 - 9,999
Ability to deliver
35.9/40.016.6/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Kraków, Poland
Ability to deliver
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$50 - $99 / hr250 - 999Wrocław, Poland
Ability to deliver
35.4/40.015.8/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
40% Enterprise App Modernization60% Other -
$50,000+$50 - $99 / hr250 - 999Miami, FL
Ability to deliver
37.5/40.019/20 Reviews10/10 Clients & Experience8.5/10 Market PresenceService focus
25% Enterprise App Modernization75% Other -
$25,000+$50 - $99 / hr50 - 249Miami, FL
Ability to deliver
35.2/40.017.2/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
45% Enterprise App Modernization55% Other -
$25,000+$25 - $49 / hr1,000 - 9,999Orlando, FL
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$100,000+$50 - $99 / hr1,000 - 9,999Oakland, CA
Ability to deliver
34/40.015.2/20 Reviews8.8/10 Clients & Experience10/10 Market PresenceService focus
45% Enterprise App Modernization55% Other -
$10,000+$100 - $149 / hr250 - 999London, England
Ability to deliver
37.8/40.018.6/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr1,000 - 9,999New York, NY
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
39.7/40.019.8/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Atlanta, GA
Ability to deliver
37.3/40.017.6/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$50 - $99 / hr1,000 - 9,999L'viv, Ukraine
Ability to deliver
38/40.018.2/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
11% Enterprise App Modernization89% Other -
$50,000+$150 - $199 / hr50 - 249Conshohocken, PA
Ability to deliver
36.4/40.016.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
38.4/40.018.8/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$100,000+$150 - $199 / hr50 - 249Southborough, MA
Ability to deliver
32.2/40.015.8/20 Reviews10/10 Clients & Experience6.4/10 Market PresenceService focus
50% Enterprise App Modernization50% Other -
$5,000+$50 - $99 / hr10 - 49Brno, Czech Republic
Ability to deliver
32.1/40.017.4/20 Reviews9.8/10 Clients & Experience4.8/10 Market PresenceService focus
60% Enterprise App Modernization40% Other -
UndisclosedUndisclosed1,000 - 9,999Atlanta, GA
Ability to deliver
33.7/40.016.4/20 Reviews10/10 Clients & Experience7.3/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$25 - $49 / hr250 - 999Frisco, TX
Ability to deliver
37.1/40.017.2/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$150 - $199 / hr50 - 249Montréal, Canada
Ability to deliver
37.5/40.017.8/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
35.3/40.016.8/20 Reviews10/10 Clients & Experience8.6/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$10,000+$25 - $49 / hr50 - 249Portland, OR
Ability to deliver
35.3/40.017/20 Reviews10/10 Clients & Experience8.3/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr250 - 999Unterschleißheim, Germany
Ability to deliver
35.1/40.018/20 Reviews10/10 Clients & Experience7.1/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$50 - $99 / hr50 - 249Prague, Czech Republic
Ability to deliver
39.2/40.020/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$100 - $149 / hr50 - 249Belfast, Northern Ireland
Ability to deliver
37/40.017.2/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
36.9/40.017.8/20 Reviews10/10 Clients & Experience9.1/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr50 - 249Toronto, Canada
Ability to deliver
37.9/40.020/20 Reviews10/10 Clients & Experience7.9/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$50 - $99 / hr250 - 999Palo Alto, CA
Ability to deliver
36.3/40.016.6/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$25,000+$50 - $99 / hr50 - 249Kraków, Poland
Ability to deliver
36.7/40.017/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$100,000+$25 - $49 / hr50 - 249Melbourne, Australia
Ability to deliver
32.7/40.016.2/20 Reviews8.4/10 Clients & Experience8.1/10 Market PresenceService focus
40% Enterprise App Modernization60% Other -
$25,000+$50 - $99 / hr50 - 249Rybnik, Poland
Ability to deliver
34.7/40.016.8/20 Reviews10/10 Clients & Experience7.9/10 Market PresenceService focus
30% Enterprise App Modernization70% 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.