Top Application Modernization Services
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$25,000+$50 - $99 / hr50 - 249AAS, Argentina
Services provided
See all 9 projectsGlobal Task is a versatile software development company known for offering tailored IT solutions, from educational platforms to credit card control systems and blockchain integrations. The company consistently receives high praise for its project management, transparency, and quality of deliverables, with 100% of reviewers noting their impressive flexibility and commitment to client goals. Reviewers also highlight Global Task's strong team dynamics and cultural fit, making them a reliable partner for diverse technological needs.
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$25,000+$50 - $99 / hr10 - 49Split, Croatia
Services provided
See all 9 projectslittlecode is a proficient software development company specializing in Enterprise App Modernization and Digital Transformation services. Their reviews highlight a strong alignment with client values, impressive code quality, and high coding standards. Notably, 100% of the feedback emphasizes their competence and flexibility in resource management.
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UndisclosedUndisclosed10 - 49Kolkata, India
Services provided
See all 11 projectsTech Mantra, a web development company, is praised for its professionalism, timely delivery, and strong client relationships. With a focus on web and mobile solutions, 80% of clients highlight project management skills and effective communication. While 90% of reviews emphasize their expertise, some suggest improvements in areas like image optimization and status reporting.
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$5,000+$25 - $49 / hr50 - 249Bengaluru, India
Services provided
See all 7 projectsYellowchalk Design is a UI/UX design company known for delivering intuitive and aesthetically pleasing interfaces with a strong focus on user experience. Across their reviews, clients consistently commend their expertise, creativity, and responsiveness, with 100% of reviewers expressing satisfaction with their dedication and flexibility. Approximately 80% highlight the active involvement of founders, enhancing design creativity and visual finesse.
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$10,000+$25 - $49 / hr250 - 999New York, NY
Services provided
See all 2 projectsHexaview Technologies is a software development company specializing in enhancing platform performance and accessibility, as demonstrated by their successful projects in ADA compliance and system optimization. They consistently receive positive feedback, with 100% of reviews highlighting their timely delivery, deep technical knowledge, and excellent project management skills, leading to significant improvements in client platforms.
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$5,000+$100 - $149 / hr2 - 9Northampton, England
Services provided
See all 4 projectsFull Metal Software is a bespoke software development company known for its adept handling of software transfer, data migration, and custom software solutions. Clients commend their seamless communication, punctuality, and budget adherence, with 100% positive feedback highlighting their effective project management and client-centric approach. Approximately 75% of reviewers specifically praise the ease and professionalism brought to complex projects.
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$10,000+$100 - $149 / hr10 - 49Berlin, Germany
Services provided
See all 3 projectsBananapie GmbH is a Flutter development company praised for its exceptional communication and teamwork. The reviews consistently highlight their reliable delivery of high-quality features and effective remote collaboration. With 100% positive feedback, clients appreciate their ability to integrate seamlessly into existing teams and their openness to innovative problem-solving approaches.
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$10,000+$100 - $149 / hr2 - 9Dublin, Ireland
Services provided
See all 4 projectsAccelerator Team is a technology development company specializing in building platforms with comprehensive IT, VR, and AI solutions. Reviews highlight their excellent service and communication skills, with around 90% of clients expressing satisfaction with their collaborative approach and ability to understand client needs. Their cost-effective pricing and willingness to make adjustments are frequently noted strengths.
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$5,000+$25 - $49 / hr10 - 49
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See all 2 projectsQualitas IT LLC is a software development company specializing in HR management tools, web development, and graphic and architecture design. They have received consistently positive feedback, with clients noting their effective integration into teams, impressive project management, and innovative contributions. Reviewers frequently highlight their design quality and responsiveness, with no significant areas for improvement mentioned by the majority.
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$25,000+$25 - $49 / hr10 - 49
Services provided
See all 2 projectsITendo is a development company specializing in creating digital platforms and marketplace solutions. Clients praise their innovative approach, understanding of industry needs, and commitment to delivering high-quality work on time. They have received an overwhelming 100% positive feedback, with reviewers highlighting impressive project management skills and effective use of modern tools such as Jira, Slack, and Figma for efficient communication and tracking.
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$10,000+Undisclosed1,000 - 9,999Princeton, NJ
Services provided
See all 1 projectsNeurealm is a technology services company specializing in Salesforce upgrades and enhancements. Reviews indicate 100% positive feedback, highlighting their technical expertise and professional conduct. Clients are impressed by their ability to deliver projects on time and within budget, with no areas for improvement noted.
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$10,000+< $25 / hr50 - 249Noida, India
Services provided
See all 8 projectsBigOhTech is a software development company that provides services such as exchange software development, module building, website and mobile app development, and data migration. Across their reviews, 75% note strong project management and timely delivery, while 50% highlight cost-effectiveness. However, there is mention of dependency on a few individuals, which could be an area for improvement.
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Undisclosed$25 - $49 / hr50 - 249Yerevan, Armenia
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See all 3 projectsInomma is a mobile app and web development company, known for their expertise in developing comprehensive solutions from concept to launch. Their reviews indicate a strong focus on professionalism, proactive communication, and timely delivery. Overall, 100% of clients express satisfaction with Inomma's performance, particularly highlighting their attention to detail and ability to meet deadlines and budgets effectively.
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$10,000+$50 - $99 / hr2 - 905, Andorra
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See all 1 projectsROCHEGRUP SOFTWARES is a custom software development company specializing in web application development. Feedback from their clients is overwhelmingly positive, with reviewers praising their robust solutions and effective project management. Notably, 100% of the feedback highlights their excellent communication and ability to meet deadlines. No areas for improvement were mentioned, indicating high client satisfaction.
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$25,000+$100 - $149 / hr10 - 49Troy, NY
Services provided
See all 2 projectsGavant Software, Inc. is a software development company specializing in creating customized solutions for intricate business needs. Clients consistently praise their partnership approach, with 100% of reviewers highlighting Gavant's deep understanding of complex systems and commitment to client success. The company is renowned for improving operational efficiency, with one client reporting a 50% reduction in billing processing time.
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$25,000+$25 - $49 / hr10 - 49Zagreb, Croatia
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See all 8 projectsIntellexi is a software development company known for delivering high-quality, tailored software solutions across various industries, including finance, telecommunications, and IT services. The reviews indicate that Intellexi is highly regarded for its technical expertise, reliability, and professionalism, with approximately 90% of clients praising their timely delivery and strong project management. The company's adaptability and focus on continuous improvement are frequently highlighted by clients.
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$25,000+$150 - $199 / hr2 - 9Orlando, FL
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See all 3 projectsGrata Software is a software development and IT consulting company known for its expertise in managing web applications, improving system reliability, and providing architecture guidance. With a focus on responsive support and quality results, Grata Software has received positive feedback from clients, with 100% praising their technical knowledge and dedication. Clients appreciate their ability to reduce stress and improve system resilience, although some desire more visibility into project milestones.
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$10,000+$25 - $49 / hr10 - 49Praha, Czech Republic
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See all 8 projectsKOALA42 is a software development company specializing in web and mobile applications, system integrations, and cloud-based solutions. Reviewers frequently commend their professionalism, agility, and timely delivery, with 100% of the feedback highlighting their exceptional communication and user-focused approach. Clients consistently express satisfaction with KOALA42's ability to exceed expectations and meet project deadlines effectively.
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$10,000+$50 - $99 / hr10 - 49Sacramento, CA
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See all 11 projectsPrestige Development Group is a recruitment firm specializing in sourcing technical and niche candidates for various industries, including software development and healthcare technologies. Reviews highlight their exceptional ability to meet tight deadlines and source qualified candidates, with over 90% of feedback praising their professionalism and effective communication. Additionally, 75% of clients appreciate their adaptability and understanding of specific company needs, contributing to successful project outcomes.
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$5,000+$25 - $49 / hr50 - 249Kyiv, Ukraine
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See all 11 projectsSprinterra is a versatile software development company specializing in creating customized applications across various industries, including real estate, finance, and healthcare. Their reviews reveal a strong emphasis on agile project management and excellent communication, with 100% of reviewers highlighting their responsiveness and ability to meet deadlines. Clients appreciate their technical expertise and commitment to delivering high-quality solutions, often noting their cultural fit and alignment with business needs.
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$50,000+Undisclosed1,000 - 9,999Hyderabad, India
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See all 6 projectsCigniti Technologies Inc. is a company specializing in independent quality engineering and testing services, including functional, automation, regression, and performance testing. With a strong focus on delivering high-quality services, they have consistently impressed clients with their technical capabilities and adherence to project timelines. Approximately 95% of clients note their impressive commitment to quality and effective collaboration, although there's room for improvement in development services.
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$5,000+$25 - $49 / hr10 - 49Kyiv, Ukraine
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See all 5 projectsAltSolution is a versatile software development company specializing in creating CRM systems, platforms, and cloud-based solutions. Overall, 100% of reviewers praised their project management skills, timely delivery, and dedication to quality, resulting in successful and scalable solutions. Approximately 80% of reviewers highlighted their proactive communication and adaptability to changing needs, which were central to their positive experiences.
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$5,000+$100 - $149 / hr10 - 49Toronto, Canada
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See all 4 projectsCreme Digital is a versatile web development company, specializing in app development, branding, UX/UI design, and MVP platform creation. Across the reviews, 75% of clients highlight their efficient project management and design expertise, although some suggest they could enhance their strategic recommendations for long-term projects. Overall, Creme Digital is praised for their responsiveness, value for cost, and collaborative approach.
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$5,000+$100 - $149 / hr10 - 49Palmerston North, New Zealand
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See all 2 projectsNodero is a software development company specializing in building customized digital solutions, including platforms and MVPs, tailored to client needs. Reviewers consistently praise their interpersonal communication and project management skills, with 100% noting their professionalism and ability to deliver on time. However, some mention a desire for greater transparency in project progress.
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$5,000+$25 - $49 / hr50 - 249
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See all 11 projectsLambda Team is a versatile technology company specializing in web development, cloud solutions, and API creation. Reviews highlight their ability to deliver projects on time and within budget, with a focus on modern technologies and responsive communication. Approximately 90% of feedback is positive, with clients praising their technical expertise and adaptability. However, around 10% suggest improvements in initial project analysis and resource availability.
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$5,000+$25 - $49 / hr10 - 49Chennai, India
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See all 8 projectsSiam Computing is a versatile web development company specializing in customized software solutions and development services. The reviews indicate a strong focus on project management, timely delivery, and client satisfaction, with approximately 80% of clients praising their communication and adaptability. Themes across the reviews highlight their strategic partnership capabilities and commitment to client needs, making them a reliable partner for diverse technological projects.
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$25,000+$25 - $49 / hr10 - 49Burgas, Bulgaria
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See all 3 projects42px is a software development company specializing in front-end development with expertise in React and Typescript. The company consistently meets client expectations, with 100% of reviewers noting successful project outcomes such as timely delivery and bug-free implementations. Clients praise their agile project management approach, highlighting seamless integration with existing teams and effective communication throughout the project lifecycle.
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$25,000+$25 - $49 / hr250 - 999
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See all 1 projectsEvolve Blue is a web development and SEO company that excels in creating mobile-responsive websites and managing search engine optimization to boost business visibility. The reviews indicate a high level of satisfaction, with 100% positive feedback, highlighting effective communication, transparency regarding costs, and a 50% business increase post-engagement. Clients appreciate their patience and ability to offer beneficial suggestions.
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$10,000+$25 - $49 / hr50 - 249Rīga, Latvia
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See all 14 projectsDiatom Enterprises is a software development company renowned for its expertise in delivering high-quality solutions across diverse industries. They specialize in areas such as cloud migration, software integration, and custom application development. Reviews consistently highlight their strong project management skills, professionalism, and ability to meet deadlines, with over 90% of clients reporting satisfaction with their technical proficiency and communication.
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$1,000+$50 - $99 / hr50 - 249Warszawa, Poland
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See all 9 projectsSoftacom is a company specializing in Enterprise Application Modernization, particularly in upgrading legacy systems and ensuring software compatibility with modern operating systems. Client reviews highlight their excellent project management and strong communication practices, with 100% of reviews expressing satisfaction with their people and processes, and no areas for improvement identified.
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List of the Top 15 Legacy Modernization Services
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$25,000+$50 - $99 / hr250 - 999Miami, FL
Ability to deliver
39.3/40.019.6/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr250 - 999Miami, FL
Ability to deliver
39.1/40.020/20 Reviews10/10 Clients & Experience9.1/10 Market PresenceService focus
25% Enterprise App Modernization75% Other -
$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 - 9,999New York, NY
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 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 -
$10,000+$25 - $49 / hr1,000 - 9,999Southborough, MA
Ability to deliver
37.2/40.017.2/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$50 - $99 / hr250 - 999Sacramento, CA
Ability to deliver
34.2/40.016.4/20 Reviews10/10 Clients & Experience7.8/10 Market PresenceService focus
80% Enterprise App Modernization20% Other -
$25,000+$25 - $49 / hr250 - 999Jaipur, India
Ability to deliver
38/40.018.2/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
20% Enterprise App Modernization80% 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 -
$25,000+$25 - $49 / hr50 - 249Agoura Hills, CA
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$25 - $49 / hr1,000 - 9,999Orlando, FL
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$5,000+$50 - $99 / hr10 - 49Brno, Czech Republic
Ability to deliver
33.8/40.018.2/20 Reviews9.8/10 Clients & Experience5.7/10 Market PresenceService focus
60% Enterprise App Modernization40% Other -
$5,000+$50 - $99 / hr250 - 999London, England
Ability to deliver
37.2/40.017.2/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$50 - $99 / hr50 - 249București, Romania
Ability to deliver
35.9/40.020/20 Reviews10/10 Clients & Experience5.9/10 Market PresenceService focus
35% Enterprise App Modernization65% 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 - 9,999Kraków, Poland
Ability to deliver
38.7/40.019/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Atlanta, GA
Ability to deliver
36.6/40.016.8/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
Undisclosed$150 - $199 / hr250 - 999London, England
Ability to deliver
36.4/40.017.2/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
38.3/40.018.4/20 Reviews10/10 Clients & Experience9.9/10 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 -
$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 -
$25,000+$25 - $49 / hr250 - 999Kropyvnytskyi, Ukraine
Ability to deliver
38.9/40.019.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$10,000+$50 - $99 / hr250 - 999Hudson, OH
Ability to deliver
35.8/40.016.4/20 Reviews9.8/10 Clients & Experience9.6/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$100 - $149 / hr10 - 49Costa Mesa, CA
Ability to deliver
36.8/40.018/20 Reviews10/10 Clients & Experience8.8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
Undisclosed$25 - $49 / hr250 - 999Toronto, Canada
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+$50 - $99 / hr50 - 249San Francisco, CA
Ability to deliver
39.6/40.019.8/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$10,000+$50 - $99 / hr50 - 249Houston, TX
Ability to deliver
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$50 - $99 / hr50 - 249Miami, FL
Ability to deliver
35.6/40.017.6/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
Undisclosed$25 - $49 / hr250 - 999Beijing, China
Ability to deliver
36.8/40.020/20 Reviews7.2/10 Clients & Experience9.6/10 Market PresenceService focus
15% Enterprise App Modernization85% 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.