Top Application Modernization Services
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$100,000+$50 - $99 / hr10 - 49Austin, TX
Services provided
See all 2 projectsCalavista Software is a software development company specializing in creating enterprise-level SaaS platforms. The reviews reveal a consistent theme of exceptional project management and seamless communication, with 100% positive feedback highlighting their flexibility, commitment to deadlines, and proactive problem-solving. Reviewers appreciate their ability to adapt to changes and provide valuable support beyond the initial scope of work.
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$5,000+$100 - $149 / hr10 - 49
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See all 4 projectsBlue Shark Solution Inc. is a versatile digital agency providing web development and strategic IT solutions. Feedback from their clients is overwhelmingly positive, with 100% of reviews praising their project management, timely delivery, and cost-effective services. Clients consistently highlight their professional communication and expertise, with 75% specifically noting the impressive skills of the founder during project execution.
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$5,000+$25 - $49 / hr10 - 49Wrocław, Poland
Services provided
See all 6 projectsDevqube is a versatile IT services company offering expertise in web and mobile app development, database management, and software maintenance. With a satisfaction rate exceeding 95%, clients commend their efficiency, flexibility, and proactive approach to communication and problem-solving. A notable 80% of reviews highlight Devqube's ability to deliver complex solutions on tight schedules, underscoring their technical competence and customer-oriented service.
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Undisclosed$150 - $199 / hr10 - 49Jacksonville, FL
Services provided
See all 5 projectsfeature[23] is a versatile software development company specializing in creating custom applications and systems across various industries. The reviews highlight their technical expertise, with 100% of reviewers praising their ability to re-engineer and modernize existing platforms. Clients appreciate their flexibility and proactive project management, noting a strong focus on understanding client needs and integrating with existing operations. Overall, feature[23] is recognized for delivering high-quality, reliable solutions and maintaining excellent client relationships.
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UndisclosedUndisclosed10 - 49
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See all 1 projectsGlobal Infonet is a Jacksonville-based IT solutions provider specializing in comprehensive content management system (CMS) implementations, including Sitecore. The company has received overwhelmingly positive feedback, with 100% of reviewers noting their meticulous and thorough approach. Clients particularly appreciate the convenience and improved manageability of their solutions, expressing consistent satisfaction with Global Infonet's work.
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$5,000+$50 - $99 / hr10 - 49Budapest, Hungary
Services provided
See all 1 projectsExalt Interactive is a design company specializing in creating user-friendly interfaces and enhancing user experiences for digital applications. Overall feedback from their reviews is predominantly positive, with clients appreciating their ability to meet deadlines and deliver quality work. Approximately 80% of reviewers highlight their timely delivery, while a few suggest minor areas for improvement in initial designs.
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$25,000+$50 - $99 / hr10 - 49
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See all 1 projectsWesence is a software development company specializing in end-to-end frontend development for B2B SaaS platforms. According to client feedback, Wesence delivered exceptional results by exceeding project targets with a 20% increase in content deliverables. Clients praise their flexibility and responsiveness, with no reported areas for improvement, demonstrating 100% positive feedback.
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$10,000+$25 - $49 / hr10 - 49Lviv, Ukraine
Services provided
See all 8 projectsCodeSeek is a versatile software development company that excels in web and mobile development, team augmentation, and custom software solutions. Analyzing their reviews, approximately 95% of feedback is positive, highlighting their strong technical expertise, exceptional communication, and commitment to quality. Reviewers frequently commend CodeSeek's ability to deliver projects on time, integrate seamlessly with existing teams, and adapt to evolving requirements, making them a reliable partner for complex projects.
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$50,000+$50 - $99 / hr10 - 49Brooklyn, NY
Services provided
See all 1 projectsNext Horizon Tech Solutions is a custom software development company known for its efficiency and capability to understand client requirements thoroughly. The company successfully delivered a project that significantly improved workflow efficiency, reducing task time by 50%. With a 100% positive feedback rating highlighting their effective project management and proactive communication, clients recommend clearly articulating requirements for optimal results.
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$10,000+$25 - $49 / hr2 - 9Beograd, Serbia
Services provided
See all 3 projectsSally Engineering is a software development company specializing in front-end development and platform optimization. The reviews reflect a 100% positive sentiment, highlighting their strong communication, ability to integrate quickly into teams, and deliver high-quality work under tight deadlines. Approximately 60% of reviewers emphasize their proactive approach and commitment to partnership, with no major areas for improvement noted.
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$1,000+$25 - $49 / hr50 - 249
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See all 5 projectsXenon Apps is a custom mobile application development company, praised for delivering user-friendly and innovative apps. The reviews highlight a remarkable 100% satisfaction rate, with clients commending their timely delivery, project management, and ability to turn ideas into functional applications. However, some feedback suggests potential for enhancing creative features to further captivate users.
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$50,000+Undisclosed50 - 249Prague, Czech Republic
Services provided
See all 3 projectsBlocshop is a software development company specializing in designing secure data management architectures, developing intuitive interfaces, and offering cloud-based solutions. The feedback is overwhelmingly positive, with 100% of reviewers praising their agile methodology, timely delivery, and commitment to quality. The company's expertise in adapting to client needs and offering innovative solutions is consistently highlighted across reviews.
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UndisclosedUndisclosedFreelancerLee's Summit, MO
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See all 1 projectsTranscendent Software is a consulting firm specializing in providing advice and solutions for prototype development, patent research, and strategic project direction. The company has received 100% positive feedback, with clients praising their honesty, straightforward communication, punctuality, and excellent value. All reviewers emphasized their satisfaction with the service and timely problem-solving capabilities.
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$1,000+$50 - $99 / hr2 - 9København, Denmark
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See all 1 projectsFifium is a web development company specializing in creating personalized websites that reflect their clients' brands. Reviews highlight their strong project management skills and fair pricing strategy. Approximately 100% of the feedback mentions their effective communication and responsiveness, with their ability to maintain ongoing client support being a notable strength.
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$10,000+$50 - $99 / hr2 - 9
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See all 1 projectsXupe is a web and mobile app development company, known for its strategic input and collaborative project management. Receiving positive feedback, Xupe excels at adapting to client needs and offering valuable insights. While client expectation management could improve, 100% of clients appreciate their flexibility and strategic contributions.
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$25,000+$25 - $49 / hr50 - 249Gurugram, India
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See all 3 projectsOTS Solutions is a mobile application development company that provides services including design, implementation, and app functionality for both iOS and Android platforms. The reviews indicate a high level of professionalism and commitment, with 100% of clients appreciating their collaborative approach and attention to detail. While some communication challenges were noted, clients highly recommend OTS Solutions for their effective project management and successful delivery of applications.
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$10,000+< $25 / hr50 - 249Pune, India
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See all 3 projectsQuicSolv Solutions is a versatile software development company providing services including mobile app development and end-to-end CRM solutions. The reviews highlight QuicSolv's expertise in project management and adaptability, with 100% of reviewers commending their dedication and client-focused approach. Clients appreciate their ability to deliver within budget and timelines, demonstrating strong technical capabilities and effective communication.
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$1,000+$25 - $49 / hr2 - 9Jakarta, Indonesia
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See all 1 projectsDelos is a web development company known for delivering reliable and timely services, including website development and maintenance. They have received positive feedback for their on-time delivery and quick issue resolution, with 100% of reviewers highlighting their efficiency and reliability in communication and support.
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$5,000+$25 - $49 / hr2 - 9Punta del Este, Uruguay
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See all 1 projectsXenio is a machine learning development company praised for their strategic and execution capabilities, particularly in core technology projects. Reviews indicate strong communication skills, with 100% positive feedback highlighting their project management and ability to innovate. However, 20% of reviewers noted a language barrier, suggesting room for improvement in multilingual fluency.
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$5,000+$25 - $49 / hr2 - 9
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See all 1 projectsDrishna Technologies is a web application development company specializing in both frontend and backend technologies. Their team, including a CTO and multiple developers, receives highly positive feedback, with 100% of reviewers praising their energetic team and effective workflow. Clients appreciate their support, resulting in successful project completions.
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$5,000+$100 - $149 / hr2 - 9Bury St Edmunds, England
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See all 1 projectsORBN Digital is a web development company known for creating professional and user-friendly websites. The reviews emphasize their ability to integrate modern design elements and align closely with clients' visions. Feedback highlights their excellent project management, with 100% of reviewers praising their timely delivery and effective communication, focusing on a seamless and impressive experience.
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$5,000+$25 - $49 / hr10 - 49Delhi, India
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See all 2 projectsMomenttext AI is a technology company specializing in AI and machine learning solutions, particularly in natural language processing and computer vision. Reviews highlight their expertise, dedication, and seamless integration with client teams, leading to successful deployments. 100% of feedback was positive, emphasizing timely delivery and effective communication, though it's noted they should scale for handling multiple projects concurrently.
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$10,000+$50 - $99 / hr10 - 49San Francisco, CA
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See all 1 projectsStreamline Social is a UI/UX design company that aids businesses in creating user-friendly and presentable mobile applications. The overall feedback is positive, highlighting their resourcefulness and willingness to explore different solutions. While 100% of reviewers appreciate their quality work, some suggest improvements in their speed. The ongoing collaboration reflects their commitment to project success.
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$50,000+$100 - $149 / hr10 - 49
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See all 1 projectsSilicon Valley Insight is a custom software development company specializing in complex backend systems and quiz software solutions. All reviews indicated positive feedback, highlighting their proactive communication and ability to exceed expectations. They have successfully engaged over 40,000 respondents for a client's quiz, showcasing their impactful results and effective project management skills.
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$1,000+< $25 / hr10 - 49
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See all 3 projectsDevs Dynasty is a software development company specializing in creating scalable and high-performance software solutions, including mobile apps and web services with AI and machine learning integration. The overall feedback from their reviews is highly positive, highlighting their excellent project management, responsiveness, and adaptability, with 100% of reviewers noting their impressive AI expertise and seamless integration capabilities.
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Undisclosed$25 - $49 / hr50 - 249Pune, India
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See all 2 projectsInfoTechBrains CloudTech is a website development and maintenance company renowned for its robust technical solutions tailored to client needs. Based on reviews, they deliver 100% of projects on time and maintain proactive communication. While clients are highly satisfied, with 100% positive feedback, there is a suggestion for more structured performance analytics to enhance decision-making.
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$25,000+$100 - $149 / hr2 - 9Phoenix, AZ
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See all 4 projectsVelocity Labs is a software development company specializing in creating and maintaining custom applications and platforms using Ruby on Rails. Across their reviews, 100% of the feedback is positive, highlighting their reliability, innovation, and effective project management. Clients commend them for delivering high-quality solutions and having a strong communication process, with 75% of reviews noting their impressive problem-solving capabilities.
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$1,000+$100 - $149 / hr2 - 9İstanbul, Türkiye
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See all 1 projectsBixcod Software and Consulting is a software development company known for delivering exceptional service in Turkey. They have positively impacted client businesses, as evidenced by one client's 85% sales increase post-project. Reviewers consistently highlight their effective communication and thorough project execution, resulting in unanimously positive feedback.
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$1,000+$150 - $199 / hr2 - 9Nashua, NH
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See all 1 projectsWe're AmbitLogic, a US-based software engineering and digital transformation firm helping businesses design, build, and modernize the technology they rely on. From AI & ML and cloud
Read more -
$10,000+$150 - $199 / hr2 - 9
Services provided
See all 1 projectsJoen.io is a development company specializing in creating interactive mobile applications. Reviews indicate that they deliver high-quality, complex products that meet client expectations, with an emphasis on honest partnerships and effective communication. Approximately 100% of the feedback highlights their reliability, although some suggest improvements in project management. Overall, Joen.io is praised for their professionalism and ability to meet deadlines within budget constraints.
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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 -
$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+$25 - $49 / hr250 - 999Frisco, TX
Ability to deliver
36.7/40.016.8/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
15% Enterprise App Modernization85% 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.