Top Application Modernization Services
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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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$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+$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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$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
Services provided
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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$5,000+$25 - $49 / hr10 - 49Ahmedabad, India
Services provided
See all 1 projectsMulticore Technologies is a comprehensive app development company specializing in creating web and native applications. The company received positive feedback for its ability to meet project specifications, with 100% of reviewers expressing satisfaction with their work. Clients highlighted effective communication and project management, underscoring Multicore Technologies' commitment to exceeding expectations.
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$10,000+$25 - $49 / hr10 - 49Varna, Bulgaria
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See all 2 projectsCode Comrades Ltd is a software development company specializing in creating engaging digital experiences through strategic design and development. Their efforts have led to improved website performance and streamlined content management, with 100% of reviewers highlighting their professionalism and communication. However, initial technical leadership issues were noted but subsequently corrected to enhance project efficiency.
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$50,000+$100 - $149 / hr50 - 249Dublin, Ireland
Services provided
See all 2 projectsMarino Software is a dynamic software development company specializing in web and mobile development, server-side programming, and UX design. Reviews indicate a 100% positive feedback rate, highlighting their professionalism, creativity, and strategic involvement in projects. Clients commend Marino Software for exceeding expectations, managing projects efficiently, and acting as an active business partner rather than just a service provider.
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$25,000+$25 - $49 / hr50 - 249Praha, Czech Republic
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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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$5,000+$25 - $49 / hr50 - 249Noida, India
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See all 4 projectsVipra is a versatile software and mobile application development company, highly praised for its effective project management and excellent communication skills. They have developed solutions for a range of industries, consistently delivering projects on time and accommodating client requests efficiently. Approximately 90% of reviewers highlight their technical expertise and strong understanding of business needs, with few areas for improvement noted.
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$10,000+$25 - $49 / hr50 - 249
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See all 1 projectsSolution Mentors Inc. is an IT services company specializing in cloud infrastructure deployment, DevOps, and managed support services. The feedback is overwhelmingly positive, highlighting their professionalism, efficiency, and expertise. Approximately 100% of reviewers commend their ability to enhance operational efficiency and reduce costs, while their seamless workflow and holistic approach are consistently praised.
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$25,000+$25 - $49 / hr250 - 999Cupertino, CA
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See all 4 projectsPratham Software is a comprehensive software development company specializing in building SaaS platforms, mobile and web applications, and technology integrations. They are recognized for their timely delivery, collaborative approach, and efficient project management, with 100% of reviews highlighting their effective communication and client-oriented service. Clients consistently praise their adaptability and quality of work, with no significant areas for improvement noted.
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$5,000+$25 - $49 / hr50 - 249San Francisco, CA
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See all 15 projectsTechnoBrains Business Solutions LLP is a versatile software development company specializing in mobile app development, UI/UX design, and web development. With 100% positive feedback, clients frequently commend their excellent project management, transparency, and ability to deliver high-quality projects on time. Approximately 85% of reviewers highlight their impressive communication and professional conduct, while 70% note their adaptability and alignment with client needs.
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$10,000+$25 - $49 / hr10 - 49
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See all 5 projectsArmara is a company specializing in Enterprise Application Modernization, offering services such as Software Modernization and Digital Transformation. The overall feedback from their reviews is positive, with 100% of reviewers commending their timely project delivery and impressive team dynamics, highlighting their effective communication and seamless project execution. Armara significantly enhanced user engagement, setting new standards in digital asset management.
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Undisclosed$100 - $149 / hr2 - 9Ottawa, Canada
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See all 9 projectsColdfront Labs is a web development company highly specialized in Drupal-based solutions, offering services ranging from website maintenance to custom application development. Across their reviews, they consistently receive praise for their technical expertise, reliability, and exceptional customer service, with 100% of clients expressing full satisfaction and appreciation for their knowledgeable and proactive approach.
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$5,000+$50 - $99 / hr2 - 9Athina, Greece
Services provided
See all 3 projectsApptiva Software is a development company specializing in software solutions, cloud consulting, and automation services. They consistently receive positive feedback, with 100% of reviewers highlighting their technical excellence, timely delivery, and responsiveness. Clients appreciate their industry knowledge, client-centered approach, and ability to enhance operational efficiency, leading to measurable business improvements.
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$5,000+$25 - $49 / hr2 - 9Vila Verde, Portugal
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See all 3 projects4DEVCODING is a versatile software development company specializing in creating custom web and mobile applications, often with ERP integrations. The company is praised for its flexibility, transparency, and effective communication, reflecting a 100% positive feedback rate. Reviewers consistently highlight their project management skills, dependability, and the ability to adapt to client needs, with 67% noting their effective communication and language adaptability.
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$5,000+$25 - $49 / hr50 - 249Troy, MI
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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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$25,000+$25 - $49 / hr50 - 249Lisboa, Portugal
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See all 5 projectsOut.Cloud is a specialized DevOps and cloud services company, offering tailored cloud infrastructure, automation, and DevOps solutions. The reviews highlight their expertise, professionalism, and commitment to client success, with 100% positive feedback. Clients appreciate their ability to meet deadlines, integrate seamlessly with teams, and deliver quality solutions, making them a reliable partner for complex cloud and DevOps projects.
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$5,000+$25 - $49 / hr50 - 249Hanoi, Vietnam
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See all 3 projectsBHSOFT is a software development company specializing in system integration, custom software development, and consulting services. The company is known for its flexible approach and impressive leadership, as 100% of reviewers highlighted their satisfaction with BHSOFT's performance and problem-solving capabilities. Frequent praise includes their proactive communication and ability to propose innovative solutions, while areas for improvement include flexibility in user requests and client management.
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$25,000+$25 - $49 / hr250 - 999Sahibzada Ajit Singh Nagar, India
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See all 9 projectsSoftobiz is a versatile technology solutions provider offering services in app and web development, cloud services, data management, QA, and more. With 90% positive feedback across reviews, clients appreciate their strong project management, flexibility, and alignment with company values. Their ability to deliver on time and within budget, along with their commitment to client success, is consistently praised by diverse industry leaders.
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$10,000+$25 - $49 / hr50 - 249
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See all 2 projectsOrtem Technologies is an app development company noted for its strong communication, knowledge, and understanding of client requirements. All reviewers reported timely delivery of services, with no areas identified for improvement. The company was chosen for its high ratings and good value for cost.
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$5,000+$25 - $49 / hr10 - 49London, England
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See all 1 projectsWazobia Technologies is a web development company known for delivering excellent quality work and meeting project deadlines efficiently. With 100% positive feedback from reviewers, the company is praised for its seamless integration into client teams and effective communication using tools like Slack and Jira.
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$10,000+$25 - $49 / hr50 - 249Rīga, Latvia
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See all 12 projectsDiatom Enterprises is a versatile software development company specializing in end-to-end solutions across various industries, including EdTech, logistics, and AI, with expertise in technologies like C#.Net, AngularJS, and Node. Their reviews reflect a commitment to high-quality deliverables and effective project management, with 90% of feedback highlighting their professionalism and technical proficiency. Clients appreciate their adaptability, strong communication, and ability to integrate seamlessly with internal teams, although minor language barriers were occasionally noted.
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$5,000+$25 - $49 / hr50 - 249Mumbai, India
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See all 9 projectsNeebal Technologies Pvt Ltd is a technology consultancy specializing in mobile and web application development and cloud solutions. Client feedback is overwhelmingly positive, with 100% of reviewers praising their professionalism, dedication, and project management skills. Many clients, such as those from financial services and education sectors, commend Neebal for exceeding expectations and delivering exceptional quality, highlighting their innovative approach and effective communication.
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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.