Top Application Modernization Services
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$1,000+$150 - $199 / hrFreelancerSan Mateo, CA
Services provided
See all 1 projectsGCX Solutions is a digital strategy and user experience agency known for its expertise in user testing and digital product design. The feedback is overwhelmingly positive, with reviewers highlighting the company's strategic insights, effective communication, and collaborative nature. Clients particularly commend the founder's knowledge and the team's ability to provide meaningful improvements, with no significant areas for improvement mentioned.
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$5,000+$100 - $149 / hr2 - 9
Services provided
See all 5 projectsSEOParity is a versatile web development and consultancy firm specializing in SEO, platform architecture, and technical audits. They consistently receive positive feedback, highlighted by their professional communication and timely project delivery. Approximately 100% of reviewers commend their reliability and effective project management, with no suggestions for improvement. This demonstrates their strong reputation and client satisfaction.
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$5,000+$25 - $49 / hr2 - 9Kingston, Jamaica
Services provided
See all 1 projectsDCI Solutions is a software development company specializing in creating scalable, web-based applications for financial services. Review feedback indicates a strong emphasis on responsiveness and understanding of business needs, with 100% positive comments on their project management and communication. However, 100% of reviewers noted a need for improved documentation timeliness.
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$10,000+$25 - $49 / hr10 - 49
Services provided
See all 10 projectsF22 Labs is a versatile software development company specializing in mobile and web application development. The company is highly praised for its professionalism, flexibility, and innovative problem-solving, as evidenced by consistently positive feedback across all reviews. Clients frequently commend their ability to meet tight deadlines and adapt to changing requirements, with approximately 80% noting their impressive project management and responsiveness.
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$5,000+$100 - $149 / hr2 - 9Toronto, Canada
Services provided
See all 2 projectsUp at Five is a web development company specializing in creating customized Shopify themes and website redesigns. They have received consistently positive feedback, with clients praising their intuitive understanding, effective communication, and ability to deliver projects on time and on budget. Two reviews highlight their tailored solutions and the seamless collaboration experienced with their team, contributing to measurable improvements in sales and user experience.
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$1,000+< $25 / hr2 - 9Ahmedabad, India
Services provided
See all 1 projectsTechrays Labs is a web development company noted for its excellent project management and technical expertise. With all reviews being positive, 100% of clients commend their communication skills and efficient service delivery. The company is particularly appreciated for offering good value for money while successfully delivering projects like web design and development.
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$10,000+$25 - $49 / hr10 - 49Madrid, Spain
Services provided
See all 3 projectsredradix is a web development company with a strong focus on front-end development and usability. They have received overwhelmingly positive feedback, with clients praising their ability to deliver high-quality projects on time and their expertise in usability and presentation. Around 100% of reviewers highlight their project management capabilities and effective communication, though some suggest improvements in initial project assessments and onsite presence.
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$25,000+$25 - $49 / hr50 - 249Chennai, India
Services provided
See all 7 projects10decoders is a versatile IT services company specializing in software development, IT consulting, and staff augmentation. Reviews indicate a 100% positive overall experience, with clients praising their project management and technical expertise. Approximately 80% of reviewers commend their commitment to deadlines, while some suggest improving employee retention and engagement management. Their adeptness across a wide range of technologies and ability to exceed expectations are consistently highlighted.
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$1,000+< $25 / hr10 - 49Indore, India
Services provided
See all 3 projectsWangoes Technologies Pvt Ltd is a dynamic technology company specializing in mobile app development and ERP integration. They have received overwhelmingly positive feedback, with 100% of reviewers praising their timely delivery and high-quality work. Clients frequently commend their support and perseverance, contributing to significant sales growth and a 300% income growth rate per month.
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$100,000+$150 - $199 / hr2 - 9Sacramento, CA
Services provided
See all 2 projectsPragmint is a software development consultancy known for its expertise in augmenting development teams and providing practical, tailor-made solutions. The company receives overwhelmingly positive feedback, with clients praising their professionalism, timely communication, and ability to enhance productivity without requiring extensive supervision. Approximately 100% of reviewers highlight Pragmint's effective project management and strategic recommendations, which lead to significant improvements in team performance.
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$10,000+$25 - $49 / hr50 - 249
Services provided
See all 3 projectsTechindo Systems Private Limited is a versatile web development company praised for its expertise in creating responsive websites and web applications, offering comprehensive frontend and backend solutions. The company received overwhelmingly positive feedback, with 100% of reviewers highlighting their technical proficiency, adaptability, and commitment to quality delivery, making them a reliable partner for diverse digital projects.
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$25,000+$50 - $99 / hr2 - 9Kigali, Rwanda
Services provided
See all 3 projectsOne World Coders is a software development firm excelling in custom solutions, including full-stack development and software coaching. Clients consistently highlight their exceptional communication, collaborative approach, and ability to drive project success, with 100% positive feedback. Their efficient project management and swift delivery are notable, with one project achieving a full website build in just three days.
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$10,000+$25 - $49 / hr50 - 249Surat, India
Services provided
See all 2 projectsMegaMinds Technologies Pvt. Ltd. is a technology solutions provider specializing in enhancing digital infrastructure and developing user-friendly web applications for e-commerce. Overall, 100% of reviews highlight their expertise, innovative approach, and client-centric service, with an emphasis on delivering cost-effective solutions and exceeding client expectations. Despite minor suggestions for improvement, clients consistently commend their technical skills and effective project management.
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$100,000+$100 - $149 / hr50 - 249Québec, Canada
Services provided
See all 5 projectsVooban is a versatile software development company with expertise in web-based solutions and IT development, primarily utilizing Microsoft technologies like .NET and Azure. Their services are highly regarded, with 100% of reviewers praising their project management and technical proficiency. Clients highlight Vooban's ability to deliver high-quality, timely results, often exceeding expectations and maintaining budgetary constraints.
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$10,000+$25 - $49 / hr50 - 249Fremont, CA
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See all 4 projectsAgile Soft Systems, Inc is a software development company offering cloud platform upgrades and CRM improvements. Reviews highlight their expertise, affordability, and responsive project management. Approximately 90% of feedback is positive, with 70% of clients impressed by their ability to address unforeseen issues. Areas for improvement include initial stakeholder involvement and QA testing.
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$1,000+$100 - $149 / hr10 - 49Jaipur, India
Services provided
See all 1 projectsKP Think Private Limited is a digital solutions company specializing in website development and social media growth. According to reviews, 100% of clients noted impressive work ethics and communication. They successfully enhanced clients' online presence through improved SEO rankings and social media engagement, with no areas for improvement identified.
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$5,000+$50 - $99 / hr10 - 49Regensburg, Germany
Services provided
See all 5 projectsint2code GmbH is an innovative software development company that specializes in embedded software solutions with a strong focus on the automotive and engineering sectors. Across the reviews, 100% of clients highlight the exceptional technical expertise and the proficiency of its engineers. The company is praised for its effective communication and integration within client teams, with no significant complaints or areas for improvement mentioned.
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$5,000+$25 - $49 / hr10 - 49Lahore, Pakistan
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See all 2 projectsDevOrbis is a development company specializing in mobile and web application solutions. According to client feedback, 100% of reviewers highlight their strong communication skills, proactive approach, and exceptional project delivery. Clients commend DevOrbis for their ability to anticipate needs and deliver successful outcomes, such as achieving thousands of app downloads shortly after launch.
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$1,000+$25 - $49 / hr10 - 49
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See all 1 projectsSoftPort is an outsourcing and custom software development company specializing in solutions such as customized software, websites, mobile applications, and graphic design. The company has consistently met expectations over five years, with 100% positive feedback highlighting their rigorous process-driven management style, led by UK professionals, and strong technical capabilities. Some clients noted a slight resistance to changing developers mid-project.
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$5,000+$50 - $99 / hr10 - 49Wrocław, Poland
Services provided
See all 2 projectsCCA Europe.pl is a software development company specializing in integrated banking solutions, particularly with FIS PROFILE systems. Their services are characterized by flexibility, technical expertise, and seamless collaboration, earning positive feedback in 100% of the reviews. Clients highlight the company's effective communication, cultural adaptability, and robust project management skills, with 50% underscoring their proactivity in technical problem-solving and change management.
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$10,000+$25 - $49 / hr10 - 49Lucknow, India
Services provided
See all 2 projectsTechno Companion is a versatile technology company specializing in application development, technology consulting, and infrastructure improvement. Reviewers consistently praise their ownership and reliability, noting effective communication and a rapid turnaround time for issue resolution. With 100% positive feedback, clients commend their flexibility, seamless project execution, and commitment to quality, enhancing user engagement and satisfaction.
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$1,000+$25 - $49 / hr10 - 49Buenos Aires, Argentina
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See all 7 projectsXside is a versatile technology partner specializing in software development, web architecture, and AI-driven solutions. Reviews consistently highlight their commitment to deadlines, high-quality deliverables, and adaptability to client needs. Approximately 90% of the reviewers praised their project management skills, while 80% noted their technical expertise and human approach to problem-solving. Areas for improvement were minimal, focusing mostly on documentation and resource retention.
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$5,000+$50 - $99 / hr2 - 9Vadodara, India
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See all 1 projectsStacknyu is a software development company specializing in building comprehensive security monitoring systems. Their reviews highlight an 100% positive feedback rate, emphasizing their technical expertise, proactive approach, and commitment to delivering user-friendly, reliable solutions. The company is praised for its ability to integrate multi-channel notifications and scalable, real-time monitoring systems, ensuring efficient and seamless operations.
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$25,000+$25 - $49 / hr10 - 49Warszawa, Poland
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See all 6 projectsSinova Development is a software development company specializing in Enterprise App Modernization and digital transformation services. With a focus on scalable and reliable solutions, they have received positive feedback for their strong engineering execution and effective project management. Notably, 100% of reviewers appreciated their ability to integrate AI and scalable system architectures within their projects.
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$250,000+$50 - $99 / hr50 - 249
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See all 1 projectsGBH is a comprehensive IT support and social media management company. Feedback from their clients highlights impressive results and dedication, with a notable success in achieving increased interaction and followers. The company maintains excellent workflow and communication, with 100% of reviewers expressing satisfaction and no areas for improvement identified.
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$100,000+$50 - $99 / hr50 - 249Ciudad de México, Mexico
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See all 3 projectsXID - Digital Services is an IT modernization company specializing in enterprise application modernization, offering services such as app modernization and software platform update services. With 100% positive feedback, reviewers note their flexibility and ability to meet demands and priorities. Their work notably enhances user satisfaction and app uptime.
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Undisclosed$50 - $99 / hr1,000 - 9,999Pittsford, NY
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See all 1 projectsConcentrix Corporation specializes in CRM implementation and customization, notably transforming SugarCRM for clients. They are praised for their proactive collaboration, with 90% of clients valuing their strategic questioning and customer support. However, 10% suggest improvement in post-implementation follow-up. Their expertise aids businesses without robust IT knowledge, ensuring tailored CRM solutions.
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$5,000+$25 - $49 / hr50 - 249Jaipur, India
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See all 7 projectsBluetris Technologies Pvt. Ltd. is a versatile technology company specializing in data engineering, CRM solutions, and web and mobile development. Their reviews highlight a strong technical proficiency, particularly in cloud-based solutions like Azure and Salesforce, with 100% of reviewers praising their technical excellence and adaptability. Feedback is overwhelmingly positive, with 80% emphasizing their effective project management and commitment to partnership.
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$25,000+Undisclosed50 - 249Noida, India
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See all 4 projectsKritiKal Solutions is a versatile technology company specializing in computer vision, machine learning, software development, and IoT solutions. Client feedback is predominantly positive, with 100% of reviewers highlighting their impressive talent pool and ability to meet project timelines. Some noted minor areas for improvement, including cost and UX capabilities. Overall, KritiKal Solutions is praised for its customer-centric approach and effective collaboration.
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$10,000+< $25 / hr50 - 249Pune, India
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See all 4 projectsHeapTrace Technology Pvt. Ltd. is a versatile technology development company specializing in web-based platform development, text analysis upgrades, and data management solutions. Their clients appreciate their cost-efficiency, creativity, and proactive approach, with 100% of reviews mentioning these strengths. However, 25% of reviews suggest room for improvement in testing practices and communication consistency. Overall, HeapTrace Technology is viewed as a reliable and valuable partner in long-term projects.
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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 / hr250 - 999Miami, FL
Ability to deliver
38.1/40.019/20 Reviews10/10 Clients & Experience9.1/10 Market PresenceService focus
25% Enterprise App Modernization75% 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 -
$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
39.5/40.019.6/20 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 -
$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
38.9/40.019.4/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr50 - 249San Francisco, CA
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$10,000+< $25 / hr250 - 999Ahmedabad, India
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
10% Enterprise App Modernization90% 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 -
$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 -
$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 -
UndisclosedUndisclosed1,000 - 9,999Atlanta, GA
Ability to deliver
33.3/40.016/20 Reviews10/10 Clients & Experience7.3/10 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 -
$10,000+$25 - $49 / hr10 - 49Ahmedabad, India
Ability to deliver
37.6/40.018.6/20 Reviews9.6/10 Clients & Experience9.5/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr250 - 999Unterschleißheim, Germany
Ability to deliver
34.9/40.017.8/20 Reviews10/10 Clients & Experience7.1/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$75,000+$50 - $99 / hr50 - 249Marlborough, MA
Ability to deliver
38.9/40.020/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
10% Enterprise App Modernization90% 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
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.