Top Application Modernization Services
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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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$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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$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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$25,000+$100 - $149 / hr10 - 49Crowborough, England
Services provided
See all 2 projectsElysium Ltd is a product development and technology solutions company that excels in comprehensive design, development, and support services. They are highly praised for their precise project management and true partnership approach, with 100% of reviewers highlighting their problem-solving capabilities and seamless integration with internal teams. While mainly UK-based, their localized focus is appreciated despite suggestions for global expansion.
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$5,000+$50 - $99 / hr250 - 999London, England
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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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$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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UndisclosedUndisclosed10 - 49Leawood, KS
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See all 13 projectsActive Logic specializes in app modernization services, including building applications from scratch and creating monetization systems. The overall feedback highlights their exceptional project management, timely delivery, and effective communication. Clients consistently praise Active Logic for their quality end products, dedication, and strong alignment with client values and needs.
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$10,000+$50 - $99 / hr10 - 49Surrey, Canada
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See all 4 projectsOrange Oranges Technologies Ltd is a versatile digital agency specializing in website development, social media management, and online business solutions. Reviews highlight an impressive 100% positive feedback, emphasizing their effective communication, client-centric approach, and cost-effectiveness. Clients particularly appreciate their customization, responsiveness, and ability to enhance online presence through tailored solutions and strategic consultations.
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$25,000+$150 - $199 / hr10 - 49Montréal, Canada
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See all 7 projectsUnderlabs Inc. is a versatile mobile app development company specializing in creating intuitive, user-friendly applications across various industries including financial services, real estate, culinary, and agriculture. The company consistently receives positive feedback for its expertise, creativity, and efficient project management, with 100% of reviews highlighting impressive communication and problem-solving skills. A notable strength is their ability to understand and deliver client visions effectively.
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$10,000+Undisclosed50 - 249São Paulo, Brazil
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See all 2 projectsVenturiX Solutions is a technology and development company specializing in scalable app and platform development using technologies like C#, Figma, Xamarin, and ReactJS. Reviews praise their thoughtful approach and commitment to delivering quality products efficiently. Approximately 100% of reviewers highlight their effective project management and problem-solving capabilities, while no significant areas for improvement were mentioned.
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$10,000+Undisclosed50 - 249
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See all 6 projectsAstec is a versatile software development company offering IT development services, specializing in cloud-based solutions, Java, JavaScript, and Python. The company consistently receives positive feedback, with approximately 90% of reviewers praising their technical expertise, professionalism, and flexibility. Clients highlight their excellent project management and communication skills, often resulting in successful project completions and high customer satisfaction.
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$100,000+$150 - $199 / hr50 - 249Carmel, IN
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See all 11 projectsSEP is a software development company specializing in custom solutions across various sectors, including healthcare, defense, and technology. The company is consistently praised for its exceptional project management, clear communication, and collaborative approach. Impressively, 100% of reviewers commend SEP for their technical expertise and strategic partnership, with no negative feedback reported. SEP's ability to integrate seamlessly with client teams and provide tailored solutions is a recurring theme in their reviews.
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$25,000+$25 - $49 / hr50 - 249Coimbatore, India
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See all 21 projectsSquash Apps is a versatile software development company offering services such as web and mobile app development, UI/UX design, and customized software solutions. Across their reviews, they consistently receive positive feedback for their project management, responsiveness, and high-quality deliverables; over 90% of reviews highlight their attention to detail and effective communication. Clients particularly appreciate Squash Apps' strong cultural fit and value alignment, resulting in successful long-term engagements.
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$50,000+$50 - $99 / hr250 - 999Kraków, Poland
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See all 4 projectsj-labs software specialists is a versatile software development company offering services in Java, Angular, AWS Cloud, and more. Their clients commend the high-quality of deliverables and professionalism, with an emphasis on effective communication and integration into client teams. Approximately 90% of reviewers highlight their adaptability and dedication, contributing to long-term client satisfaction and ongoing engagements.
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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 - $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+< $25 / hr10 - 49Lahore, Pakistan
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See all 5 projectsVenturenox is a custom software development company specializing in cloud computing, AI solutions, and DevOps services. Their reviews reflect a strong commitment to excellent customer service and effective project management, with 100% of clients highlighting their responsiveness and willingness to go the extra mile. Additionally, Venturenox successfully delivers projects within budget, enhancing operational efficiency as noted by 80% of reviewers.
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$25,000+$25 - $49 / hr50 - 249Gurugram, India
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See all 17 projectsNeuronimbus is a versatile digital solutions provider specializing in web and mobile app development, UI/UX design, and digital marketing. Reviews indicate a 100% positive feedback rate, highlighting their technical expertise, timely delivery, and effective project management. Approximately 80% of clients commend their proactive approach and problem-solving abilities, while 70% appreciate their seamless communication and customer-focused service.
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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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$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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$10,000+$25 - $49 / hr50 - 249Karachi, Pakistan
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See all 10 projectsTechwards is a versatile software development company offering services such as backend infrastructure development, AI integration, and frontend engineering. The company receives overwhelmingly positive feedback, with 100% of reviewers noting their professionalism, timely delivery, and ability to scale projects effectively. Clients frequently highlight their strong culture fit and dedication to excellence, making Techwards a reliable partner for diverse technical challenges.
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$25,000+$150 - $199 / hr50 - 249Québec, Canada
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See all 1 projectsINGENO is a web development company specializing in creating efficient and user-friendly web systems. Based on reviews, their clients appreciate their partnership approach, dedication, and round-the-clock support, with 100% positive feedback emphasizing their commitment to understanding and achieving project goals. While a few noted the need for smoother transitions when changing project managers, the overall feedback is overwhelmingly positive, highlighting their agility and effectiveness in delivering solutions.
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$10,000+$150 - $199 / hr10 - 49Minneapolis, MN
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See all 17 projectsCompoze Labs is a technology solutions provider specializing in AI integration, UI/UX design, cloud architecture, and custom software development. Reviews indicate that 100% of clients appreciate their tailored approach, technical expertise, and effective project management. Feedback emphasizes their ability to adapt solutions to specific business needs and deliver projects on time, making them a highly recommended partner for technology-driven initiatives.
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$25,000+$50 - $99 / hr50 - 249
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See all 18 projectsUppLabs LLC is a software development company with expertise in fintech, web, and mobile development. Reviews highlight their strong technical skills, dedication, and proactive approach, with 100% of feedback being positive. Clients appreciate their attention to detail and innovative solutions, contributing to successful project outcomes and efficient communication. Their ability to integrate seamlessly into teams has been a key strength, with frequent praise for their project management and timely delivery.
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$25,000+$150 - $199 / hr10 - 49
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See all 16 projectsSmartLogic is a company specializing in Enterprise Application Modernization and software design solutions. With a strong emphasis on understanding client needs and culture, they deliver high-quality outcomes, achieving 100% satisfaction in reviews. Clients praise SmartLogic's effective project management and commitment to success, highlighting an increase in workflow conversion rates and responsive collaboration.
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$1,000+< $25 / hr10 - 49Ahmedabad, India
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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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$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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$100,000+Undisclosed50 - 249
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See all 4 projectsElsewhen is a digital transformation company specializing in enterprise application modernization, offering services like app modernization and software modernization. The reviews highlight their strong focus on design expertise and idea generation, with 100% of feedback being positive. Clients appreciate their collaborative spirit and ability to deliver projects on time and within budget.
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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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$10,000+$50 - $99 / hr50 - 249Wrocław, Poland
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See all 20 projectsVM.PL Software House is a software development company specializing in Enterprise Application Modernization and digital transformation services. Reviewers highlight their smart and responsive team, good value for cost, and effective project management, although some mention challenges in exporting apps to iOS. Overall, they receive positive feedback, with clients appreciating their flexibility and understanding of business needs.
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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
35.8/40.020/20 Reviews10/10 Clients & Experience5.8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr1,000 - 9,999New York, NY
Ability to deliver
37.8/40.020/20 Reviews10/10 Clients & Experience7.8/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$100,000+$50 - $99 / hr250 - 999Miami, FL
Ability to deliver
34.9/40.019.2/20 Reviews10/10 Clients & Experience5.7/10 Market PresenceService focus
25% Enterprise App Modernization75% Other -
$10,000+$25 - $49 / hr1,000 - 9,999Southborough, MA
Ability to deliver
32.1/40.016.6/20 Reviews10/10 Clients & Experience5.5/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
UndisclosedUndisclosed1,000 - 9,999Atlanta, GA
Ability to deliver
34/40.018.8/20 Reviews10/10 Clients & Experience5.2/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr250 - 999Wrocław, Poland
Ability to deliver
31.6/40.015.8/20 Reviews10/10 Clients & Experience5.8/10 Market PresenceService focus
40% Enterprise App Modernization60% Other -
$5,000+$50 - $99 / hr10 - 49Brno, Czech Republic
Ability to deliver
31.3/40.017.8/20 Reviews9.8/10 Clients & Experience3.7/10 Market PresenceService focus
60% Enterprise App Modernization40% Other -
$5,000+< $25 / hr1,000 - 9,999
Ability to deliver
30.9/40.016.4/20 Reviews10/10 Clients & Experience4.5/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$10,000+$50 - $99 / hr250 - 999Sacramento, CA
Ability to deliver
30.8/40.016.4/20 Reviews10/10 Clients & Experience4.5/10 Market PresenceService focus
80% Enterprise App Modernization20% Other -
$100,000+$50 - $99 / hr1,000 - 9,999Oakland, CA
Ability to deliver
30.5/40.015.2/20 Reviews8.8/10 Clients & Experience6.6/10 Market PresenceService focus
45% Enterprise App Modernization55% Other -
$10,000+$50 - $99 / hr50 - 249București, Romania
Ability to deliver
33.3/40.019.6/20 Reviews10/10 Clients & Experience3.7/10 Market PresenceService focus
35% Enterprise App Modernization65% Other -
$100,000+$150 - $199 / hr50 - 249Southborough, MA
Ability to deliver
30.1/40.015.8/20 Reviews10/10 Clients & Experience4.3/10 Market PresenceService focus
50% Enterprise App Modernization50% Other -
$10,000+$25 - $49 / hr250 - 999Beijing, China
Ability to deliver
35.4/40.019.6/20 Reviews9.1/10 Clients & Experience6.7/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$25,000+$25 - $49 / hr50 - 249Agoura Hills, CA
Ability to deliver
35.9/40.020/20 Reviews10/10 Clients & Experience5.9/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$25 - $49 / hr1,000 - 9,999Orlando, FL
Ability to deliver
35.6/40.020/20 Reviews10/10 Clients & Experience5.6/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$10,000+$50 - $99 / hr250 - 999Hudson, OH
Ability to deliver
33.5/40.017.2/20 Reviews9.8/10 Clients & Experience6.5/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$1,000+< $25 / hr250 - 999Hanoi, Vietnam
Ability to deliver
34.8/40.017/20 Reviews9.7/10 Clients & Experience8/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$25,000+$150 - $199 / hr50 - 249Claymont, DE
Ability to deliver
33.3/40.016.6/20 Reviews10/10 Clients & Experience6.7/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
37.2/40.020/20 Reviews10/10 Clients & Experience7.2/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Kraków, Poland
Ability to deliver
35.2/40.019/20 Reviews10/10 Clients & Experience6.2/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Atlanta, GA
Ability to deliver
32.3/40.016.8/20 Reviews10/10 Clients & Experience5.5/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
34/40.017.8/20 Reviews10/10 Clients & Experience6.2/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$5,000+$50 - $99 / hr250 - 999London, England
Ability to deliver
31.6/40.016.6/20 Reviews10/10 Clients & Experience5/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$150 - $199 / hr10 - 49Littleton, CO
Ability to deliver
31.8/40.017.6/20 Reviews10/10 Clients & Experience4.2/10 Market PresenceService focus
35% Enterprise App Modernization65% Other -
$50,000+$100 - $149 / hr10 - 49Costa Mesa, CA
Ability to deliver
32.6/40.018.6/20 Reviews10/10 Clients & Experience4/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr50 - 249Miami, FL
Ability to deliver
31.5/40.017.2/20 Reviews10/10 Clients & Experience4.3/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$25,000+$25 - $49 / hr1,000 - 9,999São Paulo, Brazil
Ability to deliver
33.4/40.016.6/20 Reviews9.9/10 Clients & Experience7/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
31.4/40.016.4/20 Reviews10/10 Clients & Experience5/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$100 - $149 / hr250 - 999London, England
Ability to deliver
28.2/40.016.2/20 Reviews7.8/10 Clients & Experience4.2/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$25,000+$25 - $49 / hr250 - 999Kropyvnytskyi, Ukraine
Ability to deliver
34.2/40.018.8/20 Reviews10/10 Clients & Experience5.4/10 Market PresenceService focus
10% Enterprise App Modernization90% 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.