Top Application Modernization Services
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$10,000+$25 - $49 / hr2 - 9Bengaluru, India
Services provided
See all 5 projectsDebuide Technologies (OPC) Pvt Ltd is a cloud infrastructure and DevOps services company known for its proficiency in AWS, CI/CD, and infrastructure-as-code solutions. Reviews indicate a high level of satisfaction, with 100% of clients praising their professionalism, technical expertise, and timely delivery. Clients consistently highlight Debuide Technologies' ability to seamlessly integrate into their project management systems and maintain high-quality deliverables.
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$10,000+$25 - $49 / hr10 - 49
Services provided
See all 2 projectsMoai Team is a web and mobile app development company praised for its professionalism, creativity, and effective project management. They have successfully developed platforms for diverse clients, with one project achieving over 100,000 app downloads and a 4.7 rating. Reviewers commend their responsiveness and innovative solutions, with 100% of feedback highlighting positive outcomes and seamless communication.
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$10,000+$100 - $149 / hr10 - 49
Services provided
See all 5 projectsBit Complete is a development consultancy specializing in custom software solutions and technical guidance for startups and technology companies. Reviews indicate a strong emphasis on professional communication, timely delivery, and high-quality execution, with 100% of reviewers praising their expertise and responsiveness. While praised for their technical leadership and ability to adapt to changing needs, one review noted room for improvement in prioritization during project execution.
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$1,000+$25 - $49 / hr50 - 249
Services provided
See all 9 projectsiQuasar LLC is a versatile IT services company specializing in website design, development, and software application modernization. Their reviews highlight a strong focus on communication, timeliness, and value for cost. Approximately 100% of reviews commend their project management and adherence to timelines, while around 70% emphasize their flexibility and ability to adapt to changing requirements.
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$5,000+< $25 / hr50 - 249Ahmedabad, India
Services provided
See all 24 projectsiMOBDEV Technologies Pvt. Ltd. offers a range of services including App Modernization, digital transformation, and IT modernization. Reviews highlight their commitment to project timelines, effective communication, and the ability to understand and meet client requirements. Their expertise in modernizing enterprise applications has been particularly noted as a strong point.
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$10,000+$50 - $99 / hr10 - 49Warszawa, Poland
Services provided
See all 1 projectsEvergo is an IT consulting company that excels in transitioning operations and implementing service management frameworks. With a strong track record of delivering projects on time and within budget, they are praised for their expertise and solution-oriented approach. Approximately 100% of the feedback highlights their honesty, transparency, and commitment to understanding and tackling challenges effectively.
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$10,000+$50 - $99 / hr50 - 249Lisboa, Portugal
Services provided
See all 5 projectsCodex Software is a versatile software development company specializing in staff augmentation, application development, and RESTful API design. With over 90% of feedback being positive, clients consistently praise their seamless integration with teams, meeting of deadlines, and proactive problem-solving. Notable strengths include their technical acumen and dedication to client success, earning them a strong reputation for flexibility and adaptability across diverse projects.
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$5,000+$25 - $49 / hr50 - 249Sofia, Bulgaria
Services provided
See all 13 projectsAionys is a company specializing in Enterprise Application Modernization, offering solutions such as software and systems modernization. Their reviews reflect a strong reputation, with high praise for their agile project management and ability to enhance operational efficiency. The majority of feedback highlights their expertise in automating and optimizing processes, with specific mention of improved security and real-time inventory monitoring.
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$1,000+$25 - $49 / hr10 - 49Ahmedabad, India
Services provided
See all 1 projectsNstack Softech LLP is a web development company specializing in e-commerce solutions. The company is praised for its prompt communication, professionalism, and alignment with client values. Reviews indicate a 100% positive sentiment, highlighting their strong project management and ability to meet deadlines, with specific commendation for the responsiveness and punctuality of team members like Bhavik.
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$5,000+< $25 / hr10 - 49
Services provided
See all 15 projectsDevathon is a versatile development company specializing in web and mobile application solutions. The company consistently receives positive feedback, with clients highlighting their technical expertise, responsiveness, and project management skills. Around 80% of reviewers praised their ability to adapt quickly to changing requirements and deliver high-quality products. Some reviews suggested improvements in initial project scope clarity and communication frequency, underscoring Devathon's commitment to continuous enhancement.
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$25,000+$50 - $99 / hr50 - 249Warszawa, Poland
Services provided
See all 9 projectsDevapo is a versatile software development company specializing in fintech, gaming, and digital solutions. Clients consistently praise their technical expertise, communication, and proactivity, with 100% of reviews highlighting timely project delivery and satisfaction with outcomes. Devapo's ability to integrate seamlessly with teams and adapt to changing project needs is particularly noted, making them a preferred partner in complex integration and design projects.
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$10,000+$100 - $149 / hr250 - 999London, England
Services provided
See all 11 projectsSoftwire is a versatile software development company providing solutions tailored to client needs, including web development, custom software, and platform migration. Across various industries, 100% of reviewers highlight their strong project management, technical expertise, and commitment to quality. Additionally, they are commended for their agile processes and effective problem-solving skills, consistently delivering projects on time and within budget.
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$50,000+$100 - $149 / hr50 - 249Portland, OR
Services provided
See all 6 projectsAltSource Software is a versatile software development company known for creating customized solutions across various industries, including finance, healthcare, and engineering. Reviews indicate a strong positive sentiment, with clients praising their technical expertise, responsiveness, and ability to address complex challenges. Approximately 80% of reviewers commend their project management and communication skills, although some note challenges with budget and timeline adherence.
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$25,000+$50 - $99 / hr50 - 249Košice, Slovakia
Services provided
See all 4 projectsHOTOVO is a versatile software development company offering services such as custom web and mobile application development, QA testing, and DevOps support. With over 90% positive feedback, reviewers commend HOTOVO for their flexibility, timely delivery, and ability to match resources to project needs. However, there are suggestions for improved communication and more proactive technology recommendations.
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$5,000+Undisclosed250 - 999Miami, FL
Services provided
See all 2 projectsFraktal Software Technologies is a development company specializing in AI-driven solutions and IT integration. Reviewers consistently highlight their innovative sprint-based pricing model and exceptional project management, with over 90% of feedback being positive. Clients commend their flexibility, proactive communication, and user-centered design. The company has a strong alignment with client values and delivers high-quality, scalable solutions efficiently.
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$10,000+$50 - $99 / hr50 - 249
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See all 7 projectspitangoUX is a UX/UI design company specializing in creating user interfaces and experiences across various platforms, including mobile apps, websites, and dashboards. Reviews indicate a high level of satisfaction with their design expertise and collaborative approach, with approximately 80% of reviewers highlighting their impressive design capabilities. Some reviewers noted areas for improvement in communication and project management, though these concerns did not overshadow the overall positive feedback.
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$25,000+$50 - $99 / hr10 - 49Maroubra, Australia
Services provided
See all 8 projectsMadAppGang is a distinguished mobile and web development company known for its expertise in building robust applications across various industries. Renowned for their adaptability and technical prowess, this company has received overwhelmingly positive feedback from clients, with approximately 95% of reviews highlighting their problem-solving skills and professional project management. Reviewers frequently praise their ability to deliver on time and within budget, emphasizing their commitment to client satisfaction.
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$25,000+$100 - $149 / hr10 - 49Newquay, England
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See all 1 projectsflowmoco is a software development company that specializes in creating bespoke digital solutions, such as a collaborative coastal safety app. The overall feedback is highly positive, with 100% of reviewers praising their timely delivery and exceptional project management. Clients commend flowmoco for their commitment and belief in the projects they undertake, with no areas for improvement mentioned.
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$5,000+$25 - $49 / hr10 - 49Kraków, Poland
Services provided
See all 8 projectsCleverCrew is a versatile software development company specializing in front-end and back-end solutions, app development, and database management. Reviews highlight their punctuality and effective communication, with 100% of reviewers appreciating their project management and integration with teams. Clients commend their quality-to-cost ratio and innovative problem-solving, although some suggest growth in machine learning expertise and English proficiency.
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$10,000+$150 - $199 / hr10 - 49
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See all 1 projectsTwoConnect, LLC. is an IT services firm specializing in Azure integration and cloud migration, particularly with BizTalk. The feedback is overwhelmingly positive, with 100% of reviewers highlighting smooth communication and responsiveness. Clients, like Market Logistics Services Corporation, noted successful project outcomes and efficient workflows without any issues.
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$10,000+$25 - $49 / hr10 - 49
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See all 4 projectsEvalogical Technologies is a versatile technology company specializing in mobile app development, e-commerce solutions, and website design. The company consistently receives high praise for delivering user-friendly, high-quality applications and websites on time, with 100% of reviewers highlighting their responsiveness and creativity. Clients appreciate their commitment to quality and effective project management, with most reviews noting an excellent fit in terms of budget and company culture.
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$10,000+$50 - $99 / hr10 - 49Łódź, Poland
Services provided
See all 11 projectsMakimo is a custom software development company well-regarded for its expertise in Python, app development, and strategic technology consulting. The reviews highlight their exceptional project management, strong technical skills, and ability to deliver quality solutions on time. Clients appreciate their collaborative approach and transparency, with approximately 90% of reviewers emphasizing their responsiveness and professionalism, while no significant areas for improvement were mentioned.
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$50,000+$25 - $49 / hr10 - 49Novi Sad, Serbia
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See all 6 projectsBDIT Engineering is a versatile software development company offering services in web, mobile, and data engineering. The reviews highlight their strong technical expertise, effective communication, and ability to deliver high-quality work on time. Approximately 100% of reviewers emphasize the company's great value for cost and their seamless project management, with no negative feedback noted.
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$25,000+$50 - $99 / hr50 - 249Buenos Aires, Argentina
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See all 4 projectsAdviting as a versatile IT consulting firm, Adviters offers services in software development, system improvement, and process digitalization. Reviews indicate a strong alignment with client values and a reputation for delivering high-quality work. While 75% of feedback highlights their timely delivery and effective communication, some reviewers mention the need for better documentation and resource selection.
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$25,000+$25 - $49 / hr10 - 49Warszawa, Poland
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See all 7 projectsPRAS Europe is a versatile software development company providing services such as web development, mobile app creation, and business strategy consulting. The company is praised for its strong price-value ratio and professionalism, with approximately 75% of reviewers highlighting their exceptional business analysis and technical capabilities. However, there are suggestions for improved project management, though overall satisfaction is high with clients appreciating the company's responsiveness and value.
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$25,000+$50 - $99 / hr50 - 249Lukavica, Bosnia and Herzegovina
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See all 6 projectsSingularity is a company specializing in Enterprise Application Modernization, focusing on enhancing platforms, implementing new features, and improving security. The reviews indicate 100% positive feedback, highlighting their timely delivery, effective project management, and ability to provide diverse skills. Clients consistently praise their value for cost and alignment with company values.
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$25,000+$150 - $199 / hr10 - 49New York, NY
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See all 14 projectsDef Method is a software development company that specializes in creating customized web and mobile applications, as well as providing strategic consulting and project management services. Their reviews on Clutch.co reveal a high level of satisfaction, with 100% of clients praising their effective communication, customer-centric approach, and technical expertise. Def Method is commended for understanding client needs thoroughly, delivering reliable products, and offering valuable business insights, making them a trusted partner in various industries.
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$25,000+$100 - $149 / hr10 - 49Barcelona, Spain
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See all 7 projectsSystemSeed is a web development company specializing in creating digital platforms and learning management systems using Drupal. Across the reviews, clients consistently praised SystemSeed for their excellent project management, technical expertise, and alignment with client values. Positive feedback is overwhelming, with approximately 90% of reviewers highlighting their professionalism and ability to deliver creative solutions and improve user experience. A few clients noted minor challenges like staff transitions or budget concerns, but overall satisfaction remains high.
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$5,000+< $25 / hr10 - 49Sacramento, CA
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See all 15 projectsRocket Systems is a software modernization company specializing in Enterprise App Modernization and digital systems transformation. Reviews indicate a 100% positive feedback rate, highlighting their professionalism, effective project management, and technical proficiency. Approximately 90% of reviewers praise their ability to deliver functional, high-quality apps on time while maintaining excellent communication and a positive company culture.
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Undisclosed< $25 / hr50 - 249Chennai, India
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See all 10 projectsAgriya is a software development company that specializes in custom web development, backend solutions, and e-commerce platforms. Across multiple reviews, clients consistently praise their technical expertise, commitment, and effective communication, with approximately 90% expressing satisfaction. Notable strengths include their dedication to deadlines and responsiveness, although some mention minor issues with testing and design precision. Overall, Agriya is regarded as a reliable partner for businesses seeking tailored technical solutions.
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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
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
15% Enterprise App Modernization85% 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 / 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+$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 -
$25,000+$50 - $99 / hr50 - 249Miami, FL
Ability to deliver
35/40.017/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
45% Enterprise App Modernization55% 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+$25 - $49 / 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 -
$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
38.7/40.019.2/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$5,000+$50 - $99 / hr10 - 49Brno, Czech Republic
Ability to deliver
32.7/40.018/20 Reviews9.8/10 Clients & Experience4.8/10 Market PresenceService focus
60% Enterprise App Modernization40% Other -
$50,000+$50 - $99 / hr50 - 249San Francisco, CA
Ability to deliver
39.6/40.019.8/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
15% Enterprise App Modernization85% 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 -
$50,000+$150 - $199 / hr50 - 249Conshohocken, PA
Ability to deliver
36/40.016.2/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr1,000 - 9,999L'viv, Ukraine
Ability to deliver
37.6/40.017.8/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
11% Enterprise App Modernization89% 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 -
$25,000+$25 - $49 / hr250 - 999Frisco, TX
Ability to deliver
36.9/40.017/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
15% Enterprise App Modernization85% 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 - 249Warszawa, Poland
Ability to deliver
38.3/40.019.2/20 Reviews10/10 Clients & Experience9.1/10 Market PresenceService focus
15% Enterprise App Modernization85% 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 -
$10,000+$25 - $49 / hr50 - 249Portland, OR
Ability to deliver
35.1/40.016.8/20 Reviews10/10 Clients & Experience8.3/10 Market PresenceService focus
30% Enterprise App Modernization70% 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 -
$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 -
$10,000+$25 - $49 / hr10 - 49Ahmedabad, India
Ability to deliver
37.4/40.018.4/20 Reviews9.6/10 Clients & Experience9.5/10 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.