Top Application Modernization Services
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$5,000+$25 - $49 / hr50 - 249Pune, India
Services provided
See all 5 projectsCarnera is a versatile data engineering and software development company, excelling in providing data analytics, full-stack development, and team augmentation services. Reviews highlight their strong project management skills, timely delivery, and effective communication, with over 80% of clients praising their responsiveness and seamless integration with client teams. Clients also appreciate Carnera's professionalism and resource quality.
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$10,000+$50 - $99 / hr2 - 9Bratislava, Slovakia
Services provided
See all 3 projectsJAVI Solutions is a software development company specializing in custom web applications and ERP systems. The company receives consistently positive feedback, with clients appreciating their dedication and problem-solving skills, though occasional delays in timelines were noted. Impressively, 100% of reviewers highlight JAVI's commitment to meeting project needs and resolving issues efficiently.
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$75,000+Undisclosed10 - 49L'viv, Ukraine
Services provided
See all 5 projectsAimtraction is a versatile software development company specializing in full-cycle development with a focus on Angular and AI-powered solutions. They have consistently impressed clients with their ability to integrate seamlessly into teams, delivering high-quality, scalable solutions with rapid turnaround times. Reviews highlight their strategic thinking and proactive communication, with over 90% of clients expressing satisfaction in usability and reliability. A recurring theme is their exceptional commitment to client success, often going beyond contractual obligations to ensure project outcomes align with business goals.
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$5,000+$50 - $99 / hr10 - 49
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See all 2 projectsDEIP is a company specializing in blockchain solutions, providing secure, scalable, and customizable platforms for projects requiring transparency and efficiency, especially in R&D and intellectual property management. Reviewers consistently commend DEIP's flexibility, technological capabilities, and effective project management, with 100% noting their impactful platform structure and potential cost savings. However, suggestions for improvement include expanding their customer base and team.
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$25,000+$150 - $199 / hr10 - 49
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See all 2 projectsinoutput is a versatile software development company specializing in custom software solutions and mobile app development. The company received 75% positive feedback, with clients praising their project management skills, transparency, and technical expertise. However, there were concerns about cost-effectiveness for smaller projects and initial communication issues, which were reportedly addressed in subsequent stages.
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$50,000+Undisclosed50 - 249Prague, Czech Republic
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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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$1,000+$25 - $49 / hr2 - 9Rabat, Morocco
Services provided
See all 6 projectsCode Studio is a web development company specializing in Webflow, front-end development, and custom web solutions using technologies like React, JavaScript, and GSAP. The reviews are overwhelmingly positive, with 100% of clients praising their responsiveness, problem-solving skills, and quality of work. Notably, 80% of reviews highlight their ability to adapt to client needs and deliver projects on time.
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$25,000+$50 - $99 / hr10 - 49
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See all 2 projectsPropulsoft is a versatile technology company offering web design, software, and application development services. The reviews highlight their strong project management, creativity, and impressive price-quality ratio. Approximately 100% of reviewers praise their responsiveness, innovative ideas, and the quality of the deliverables, indicating high satisfaction with Propulsoft's work and professionalism.
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$10,000+$50 - $99 / hr10 - 49Tallinn, Estonia
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See all 4 projectsApricusIT is a technology consulting and implementation company specializing in digital transformation, marketing automation, and cloud scaling solutions. The company is consistently praised for its professionalism, technical expertise, and effective communication, with notable client satisfaction in 100% of the reviews. Clients often commend ApricusIT's dedication to achieving business-oriented results and seamless integration of complex solutions.
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$5,000+$50 - $99 / hr2 - 9
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See all 1 projectsUxbox is a web development company specializing in creating user-friendly, multi-language websites with a focus on SEO and conversion optimization. They have received overwhelmingly positive feedback, with 100% of reviewers highlighting their professionalism and efficiency. Clients particularly appreciate their ability to deliver high-quality work on time, contributing to improved client satisfaction and increased website leads.
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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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$10,000+$50 - $99 / hr2 - 9Plovdiv, Bulgaria
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See all 1 projectsSkillAbility Soft Ltd. specializes in creating and integrating patient engagement and dental practice management software. Reviews highlight their exceptional communication and timely delivery, with all projects completed ahead of schedule. Impressively, 100% of reviewers commend their experience and dedication, although there's a note on setting work-hour boundaries. Overall, SkillAbility Soft Ltd. maintains a strong reputation for meeting client objectives effectively.
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$25,000+$25 - $49 / hr10 - 49Budapest, Hungary
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See all 8 projectsR-Szoft Ltd. is a dynamic software development and IT services company, excelling in custom software solutions, system integration, and testing. The company consistently receives positive feedback, with 100% of reviewers praising their professionalism, agile project management, and timely delivery. Clients commend their flexibility, proactive communication, and collaboration with existing teams, making R-Szoft Ltd. a reliable partner for complex projects.
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$1,000+< $25 / hr10 - 49Surat, India
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See all 2 projectsTechnomargin is a front-end development company that specializes in transforming Figma prototypes into functional websites. Based on client reviews, 100% of the feedback highlights their professionalism, patience, and ethical approach. While all clients were satisfied with the deliverables, some noted that faster delivery could be an area for improvement.
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$5,000+< $25 / hr10 - 49Chennai, India
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See all 2 projectsYsquare Technology is a versatile development company specializing in web and mobile application development, as well as cloud solutions. The company is consistently praised for meeting timelines and demonstrating flexibility, with 100% positive feedback emphasizing their seamless project management and strong leadership. Notably, 75% of reviewers highlight the company's customer-centric approach and effective communication.
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$100,000+$50 - $99 / hr10 - 49Austin, TX
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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
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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
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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
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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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$5,000+$50 - $99 / hr10 - 49Katowice, Poland
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See all 5 projectscodefit is a software development company known for its expertise in providing digital solutions, particularly within the maritime and cruise industries. They offer high-quality, cost-effective services, which include developing web and mobile applications to enhance operational efficiency and safety. Approximately 90% of reviews highlight their prompt communication and effective project management, with 95% indicating timely delivery and problem resolution. Clients consistently praise codefit for their professionalism, innovative solutions, and excellent teamwork.
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$10,000+$25 - $49 / hr10 - 49Lviv, Ukraine
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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
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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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$5,000+$100 - $149 / hr50 - 249Noida, India
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See all 4 projectsPeritos Solutions is a versatile IT services provider, specializing in software development and cloud solutions, notably AWS. Their reviews reflect a strong commitment to quality with 100% of clients noting timely delivery and effective project management. Clients frequently praise their technical expertise and ability to tailor solutions to specific needs, with no significant areas for improvement identified across the reviews.
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$10,000+$25 - $49 / hr2 - 9Beograd, Serbia
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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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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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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
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 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 -
$50,000+$50 - $99 / hr250 - 999Miami, FL
Ability to deliver
37.5/40.019/20 Reviews10/10 Clients & Experience8.5/10 Market PresenceService focus
25% Enterprise App Modernization75% Other -
$25,000+$50 - $99 / hr50 - 249Miami, FL
Ability to deliver
35.2/40.017.2/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
45% Enterprise App Modernization55% 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 -
$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
39.7/40.019.8/20 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 -
$50,000+$50 - $99 / hr1,000 - 9,999L'viv, Ukraine
Ability to deliver
38/40.018.2/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
11% Enterprise App Modernization89% Other -
$50,000+$150 - $199 / hr50 - 249Conshohocken, PA
Ability to deliver
36.4/40.016.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
38.4/40.018.8/20 Reviews10/10 Clients & Experience9.6/10 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 -
$5,000+$50 - $99 / hr10 - 49Brno, Czech Republic
Ability to deliver
32.1/40.017.4/20 Reviews9.8/10 Clients & Experience4.8/10 Market PresenceService focus
60% Enterprise App Modernization40% Other -
UndisclosedUndisclosed1,000 - 9,999Atlanta, GA
Ability to deliver
33.7/40.016.4/20 Reviews10/10 Clients & Experience7.3/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$25 - $49 / hr250 - 999Frisco, TX
Ability to deliver
37.1/40.017.2/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
15% Enterprise App Modernization85% 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 - 249Portland, OR
Ability to deliver
35.3/40.017/20 Reviews10/10 Clients & Experience8.3/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr250 - 999Unterschleißheim, Germany
Ability to deliver
35.1/40.018/20 Reviews10/10 Clients & Experience7.1/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$50 - $99 / hr50 - 249Prague, Czech Republic
Ability to deliver
39.2/40.020/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$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 -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
36.9/40.017.8/20 Reviews10/10 Clients & Experience9.1/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr50 - 249Toronto, Canada
Ability to deliver
37.9/40.020/20 Reviews10/10 Clients & Experience7.9/10 Market PresenceService focus
15% Enterprise App Modernization85% 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 -
$25,000+$50 - $99 / hr50 - 249Kraków, Poland
Ability to deliver
36.7/40.017/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$100,000+$25 - $49 / hr50 - 249Melbourne, Australia
Ability to deliver
32.7/40.016.2/20 Reviews8.4/10 Clients & Experience8.1/10 Market PresenceService focus
40% Enterprise App Modernization60% Other -
$25,000+$50 - $99 / hr50 - 249Rybnik, Poland
Ability to deliver
34.7/40.016.8/20 Reviews10/10 Clients & Experience7.9/10 Market PresenceService focus
30% Enterprise App Modernization70% 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.