Top Application Modernization Services
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$1,000+$25 - $49 / hr10 - 49Kyiv, Ukraine
Services provided
See all 4 projectsNetex Cloud Technologies LLC is an IT solutions provider specializing in process automation, HR systems development, and IT support services. With overwhelmingly positive feedback, 100% of clients commend their high-quality output and effective communication. However, a common suggestion for improvement involves aligning payment terms to industry standards. Overall, clients highlight their sophisticated expertise and proactive approach.
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$25,000+$150 - $199 / hr10 - 49Oakleigh South, Australia
Services provided
See all 7 projectsEnvision IT is an IT services company that offers solutions such as website development, API integration, ERP system implementation, and complex algorithm development. The company consistently receives positive feedback, with clients praising its project management, timely delivery, and ability to work independently and efficiently. Approximately 100% of reviewers highlight Envision IT's capacity to simplify complex problems and deliver projects on schedule and within budget.
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$25,000+$100 - $149 / hr50 - 249Pasadena, CA
Services provided
See all 14 projectsArt+Logic is a software development company that offers tailored solutions across various industries, including app development, web applications, and embedded systems. Overall, their reviews highlight a strong focus on customer satisfaction, with 100% of feedback being positive, emphasizing their exceptional project management, technical expertise, and commitment to understanding client needs. Reviewers frequently mention the company’s culture fit and alignment with client values.
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$5,000+$25 - $49 / hr50 - 249Jodhpur, India
Services provided
See all 1 projectsLp Cloud Lab Pvt. Ltd. is a company specializing in Enterprise Application Modernization, with a focus on developing modern cloud-native solutions. Their reviews highlight exceptional project management and rapid response times, with a commitment to understanding client needs. Overall, 100% of the feedback is positive, emphasizing their dedication to delivering impactful and customized solutions.
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$10,000+$50 - $99 / hr10 - 49Prague, Czech Republic
Services provided
See all 5 projectsSWEHQ is a versatile software development company specializing in custom web applications, UX/UI, and API services. Feedback is overwhelmingly positive, with 100% of reviewers praising their expertise, commitment, and open communication. Clients appreciate their problem-solving skills and adaptability, often highlighting their effective project management and ability to deliver high-quality, scalable solutions meeting specific industry needs.
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$250,000+$200 - $300 / hr50 - 249Houston, TX
Services provided
See all 2 projectsChaiOne is a digital solutions company specializing in mobile app development, offering expertise in building cross-platform applications using technologies like Flutter. Reviews highlight their ability to integrate smoothly with client processes, meet quality standards, and bring valuable insights to projects. Clients report a 100% positive experience, noting ChaiOne's efficiency, professionalism, and the added value they provide through innovative ideas.
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$5,000+$50 - $99 / hr10 - 49Plovdiv, Bulgaria
Services provided
See all 2 projectsPlatform Devs is a software development company specializing in building and maintaining custom applications. Their expertise in frontend and backend development was highlighted by clients, who reported significant improvements, such as a fourfold increase in customer success rates. The company is praised for its effective project management and responsiveness, with 100% positive feedback, particularly for their proactive communication and handling of complex projects.
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$10,000+$50 - $99 / hr2 - 9Warszawa, Poland
Services provided
See all 2 projectsKosmosKod is a web development company specializing in creating customized online booking systems. Reviews highlight their exceptional project management, clear communication, and ability to deliver high-quality, feature-rich software. Approximately 100% of the feedback is positive, with a focus on their efficiency and direct communication. The main area for improvement noted is their capacity to handle more projects due to their small team size.
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$1,000+< $25 / hr10 - 49Ahmedabad, India
Services provided
See all 8 projectsBuoyancy Software LLP is a versatile software development company specializing in mobile app and web development, CRM solutions, and SaaS products. Their projects consistently receive positive feedback for timely delivery, effective communication, and technical expertise, with over 90% of reviewers highlighting these aspects. Clients frequently commend their proactive approach and ability to seamlessly integrate complex features.
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$10,000+$50 - $99 / hr50 - 249Cary, NC
Services provided
See all 9 projectsIntelligaia, a company specializing in Enterprise Application Modernization, excels in UX and application design and development. Reviews highlight their ability to combine top-tier design with knowledgeable technical expertise, achieving outcomes like improved user accomplishment rates and higher retention. Their client feedback is overwhelmingly positive, with a strong emphasis on accountability and effective project management.
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$5,000+$50 - $99 / hr250 - 999London, England
Services provided
See all 11 projectsVRP Consulting is a specialized Salesforce consultancy firm, offering a range of services including platform customization, integration, architecture, and development. Reviews consistently highlight their technical expertise, professional project management, and flexibility in accommodating client needs. Approximately 85% of users reported improved operational efficiency and user adoption rates. Their proactivity and strategic recommendations are frequently noted as distinguishing features. However, minor challenges such as time zone coordination were mentioned but generally well-managed.
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$10,000+$25 - $49 / hr10 - 49Noida, India
Services provided
See all 13 projectsTerasol Technologies is a versatile IT service provider specializing in custom software development, website and mobile app creation, and digital solutions across various industries. The company has received overwhelmingly positive feedback, with clients praising their professionalism, timeliness, and effective communication. Approximately 90% of the reviews highlight their ability to exceed expectations and deliver high-quality, innovative solutions, while minor areas for improvement include offering more payment options and expanding support services.
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UndisclosedUndisclosed50 - 249Hopkins, MN
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See all 2 projectsAubrant Digital is a company specializing in Enterprise Application Modernization, focusing on modernizing legacy systems and enhancing digital transformation through robust API development. Feedback indicates a 100% satisfaction rate, with clients appreciating their alignment with project goals and commitment to understanding client needs.
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$50,000+$150 - $199 / hr50 - 249Québec, Canada
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See all 3 projectsNexapp is a custom software development company that specializes in developing web and mobile applications, offering services such as DevOps coaching, staff augmentation, and project management. The overall feedback from their clients is predominantly positive, with 100% of reviewers appreciating their modern methodologies, adaptability, and commitment to quality. However, some reviews suggest improvement in staff augmentation and avoiding over-engineering.
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$25,000+$50 - $99 / hr50 - 249Rīga, Latvia
Services provided
See all 15 projectsMitigate is a versatile software development company specializing in mobile app and middleware development, as well as custom software solutions. Across their reviews, Mitigate is praised for strong project management, proactive communication, and a solutions-oriented mindset. They have been consistently recognized for delivering projects on time and aligning well with client values, with nearly 100% positive feedback highlighting their adaptability and technical expertise.
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$5,000+$25 - $49 / hr10 - 49Kelowna, Canada
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See all 6 projectsStreamline Healthcare is a custom software development company with expertise in healthcare and fintech solutions. Clients appreciate their economic pricing and value their sales acumen, with 80% highlighting their impressive business process insights and international reach. While their project management is praised for communication, some reviews suggest improvements in follow-up and project tracking.
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$5,000+$50 - $99 / hr10 - 49Chobham, England
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See all 4 projectsBlue Tea is a software development company specializing in custom platforms, applications, and browser extensions for diverse sectors, including healthcare, government, and mental health. With an impressive track record of on-time delivery and strong customer relationships, 100% of reviewers praised their technical expertise and ethical values. However, 25% noted room for deeper client understanding and proactive management.
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$1,000+< $25 / hr50 - 249Ahmedabad, India
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See all 10 projectsConcetto Labs is a versatile software development company specializing in mobile and web applications, as well as custom software solutions. The reviews indicate a high level of client satisfaction, with around 85% of the feedback highlighting their strong communication skills and timely delivery of projects. Clients frequently commend Concetto Labs for their dedication, technical expertise, and ability to understand and meet diverse project requirements.
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$25,000+$25 - $49 / hr50 - 249Kyiv, Ukraine
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See all 14 projectsJoin.To.IT is a software development company recognized for its expertise in building web and mobile applications across various industries. They are highly rated, with approximately 90% positive feedback highlighting their professionalism, adherence to deadlines, and the ability to handle complex tasks effectively. Clients frequently commend their clear communication and project management skills, as well as their proactive approach to problem-solving.
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$50,000+$50 - $99 / hr50 - 249Kraków, Poland
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See all 6 projectsGrape Up is a technology consulting company specializing in cloud computing, DevOps, and mobile applications. Their reviews highlight a consistent theme of professionalism, expertise, and a strong collaborative approach, with 100% positive feedback on project execution and agile methodologies. Several reviewers commend their ability to deliver high-quality products efficiently, adapting to various client needs and contributing significantly to process improvements.
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$1,000+< $25 / hr10 - 49Ahmedabad, India
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See all 3 projectsMegaMinds United is a software development company specializing in Laravel application development, responsive and mobile development, and progressive web app development using React and Vue frameworks. Reviews highlight their professionalism, timely delivery, and responsive communication, with 100% of feedback being positive and emphasizing their alignment with client values, quality work, and willingness to adapt to client needs.
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$5,000+$50 - $99 / hr10 - 49Montréal, Canada
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See all 9 projectsStackfee is a versatile software development company that specializes in web development, CRM systems, software migration, and custom software solutions. Clients consistently praise Stackfee for their efficiency, speed, and exceptional project management, with 100% of reviews highlighting their ability to deliver on time and within budget. Approximately 90% of reviewers commend Stackfee's communication and problem-solving skills, while multiple clients note their successful handling of complex projects and seamless client collaboration.
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$1,000+$25 - $49 / hr10 - 49Sofia, Bulgaria
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See all 9 projectsBulgarian Software House - BSH is a technology company specializing in custom software development, with a strong focus on Microsoft technologies, including SharePoint and .NET. Across numerous reviews, clients consistently praise BSH for their deep technical expertise, professional project management, and ability to deliver projects on time and within scope. Approximately 100% of the reviewers highlighted the company’s friendly and collaborative approach, emphasizing their impressive knowledge-sharing capabilities.
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$10,000+$50 - $99 / hr2 - 9
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See all 12 projectsKSB Technologies is a company specializing in Enterprise App Modernization services, focusing on enhancing and expanding features for client projects. Reviews highlight their excellence in project management and autonomy, with 100% positive feedback regarding timely delivery and strategic alignment with technical directions. Their ability to independently drive complex development tasks is particularly impressive.
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$5,000+$25 - $49 / hr50 - 249
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See all 8 projectsWebSenor is a web development and digital marketing company offering services like website development, mobile app development, and digital marketing, including SEO and social media marketing. Their clients report positive experiences overall, with 80% praising their professionalism, timely delivery, and technical expertise. While communication and project management tools are noted as areas for improvement, clients value their dedication and adaptability in overcoming technical challenges.
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$50,000+$300+ / hr50 - 249Whitby, Canada
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See all 1 projectsSimnet is an IT consulting company offering cloud-based services, managed services, end-user computing, and security solutions. Reviews highlight their successful collaboration with Virtuozzo, emphasizing strong project management, effective communication, and excellent customer service. The majority of feedback is positive, with clients appreciating their automation capabilities and cost-saving solutions, with nearly 100% mentioning the smooth transition to a multi-cloud environment.
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$50,000+$50 - $99 / hr50 - 249Montréal, Canada
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See all 1 projectsAxamit is a digital transformation company specializing in Marketo Engage business consulting, application development, and support. Overall, the feedback is overwhelmingly positive, with 100% of reviews highlighting their timely delivery, proactive project management, and certified expertise as an Adobe partner. Moreover, 34% of reviewers noted increased campaign success, underscoring Axamit's effective solutions and strong client relationships.
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$25,000+$25 - $49 / hr250 - 999
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See all 6 projectsDelaplex is a versatile software development company specializing in building customized software solutions across various industries, including entertainment, healthcare, fintech, and more. Reviews highlight their adaptability, strong project management skills, and deep industry understanding, with nearly 100% of clients praising their commitment to quality and collaboration. Although minor challenges, such as occasional communication barriers, are noted, clients consistently emphasize Delaplex's ability to seamlessly integrate with teams and deliver high-quality results.
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$5,000+$25 - $49 / hr50 - 249Semarang, Indonesia
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See all 6 projectsCrocodic is a premier software development company in Indonesia specializing in web and mobile application development, particularly for HRIS and matchmaking platforms. Across their reviews, they received overwhelmingly positive feedback, with clients praising their technical expertise, proactiveness, and ability to deliver on time. Notable achievements include a 95% reduction in user complaints and a 30% increase in operational efficiency, with no significant areas of improvement identified by clients.
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$25,000+$50 - $99 / hr50 - 249London, England
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See all 17 projectsApplifting is a versatile IT consulting and development company offering diverse services such as digital platform development, frontend optimization, mobile app redesign, and automation testing. The reviews reflect a high satisfaction rate, with around 90% of clients praising their project management, timely delivery, and cultural alignment. Many clients appreciate their expertise, innovative solutions, and partnership approach, with nearly 70% highlighting their ability to integrate seamlessly with client teams.
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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.