Top Application Modernization Services
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$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Services provided
See all 4 projectsBytebrand Outsourcing AG is a versatile software development company renowned for its expertise in mobile app development, inventory management solutions, and customized software tools. The company consistently receives positive feedback, with approximately 90% of reviews highlighting their effective project management and ability to deliver on time and within budget. Clients frequently praise their solution-oriented approach and seamless communication, particularly with their experienced project managers.
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$1,000+$25 - $49 / hr10 - 49
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See all 1 projectsSynthesis Technology is a web development company specializing in creating websites using platforms like Office 365 and SharePoint Intranet. Reviews reflect a 100% positive sentiment, highlighting their dedication, accessibility, and exceptional customer service. Clients commend their attention to detail and ability to exceed expectations, with no noted areas for improvement.
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Undisclosed$50 - $99 / hr10 - 49Frisco, TX
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See all 3 projectsAsinpa LLC is a database and software development company providing backend solutions, data management, and .NET application development. Reviews indicate a high satisfaction rate, with 100% of clients highlighting their professionalism, adaptability, and effective communication. Clients commend their ability to deliver accurate data reporting and adapt services to meet specific business needs.
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$1,000+$25 - $49 / hr10 - 49
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See all 3 projectsSwiftle.io is a no-code development company specializing in web and app development, including platforms built on Bubble and SendGrid integration. Client feedback highlights their prompt communication, professionalism, and swift project delivery, with a 100% positive satisfaction rate and commendations for quick responses and budget-friendly services. Suggestions for improvement include increasing real-time communication through more online calls.
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$10,000+$25 - $49 / hr10 - 49
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See all 8 projectsVyrazu Labs Pvt. Ltd. is a versatile software development company frequently recognized for its app and web development capabilities. Across various projects, clients have highlighted their technical expertise, project management skills, and responsiveness. Approximately 80% of the reviews emphasize their effective communication and commitment to meeting deadlines, while around 60% commend their innovative approach to problem-solving. Overall, feedback is predominantly positive, with minimal areas suggested for improvement.
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$10,000+$25 - $49 / hr50 - 249Lalitpur, Nepal
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See all 2 projectsRara Labs is a software development company specializing in creating custom business solutions, such as data reconciliation and cloud-based accounting systems. Their work is characterized by strong project management, timely delivery, and effective customer communication. Feedback is predominantly positive, with clients highlighting the team's expertise and dedication, although there is a suggestion to enhance documentation.
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$50,000+$50 - $99 / hr250 - 999New York, NY
Services provided
See all 14 projectsGaper is a technology company specializing in providing remote software engineers and development services. Based on the reviews, approximately 86% of the feedback is positive, highlighting their efficient hiring process, professionalism, and high-quality engineers. Common themes include quick candidate selection, impressive project management, and timely delivery of services. However, a small portion of reviews (around 14%) mention areas for improvement in execution and decision-making.
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$50,000+$25 - $49 / hr10 - 49
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See all 2 projectsCodeWalnut is a web development company specializing in creating and optimizing WordPress websites with a strong focus on improving page load speeds and enhancing user experiences. The overall feedback from clients is overwhelmingly positive, with reviewers highlighting their excellent project management, communication, and responsiveness; approximately 100% of feedback mentions professionalism and attention to detail.
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$10,000+$25 - $49 / hr50 - 249Hyderabad, India
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See all 8 projectsWalkingTree Technologies is a versatile software development company that specializes in areas such as AI development, business intelligence, full-stack development, and mobile app design and development. The reviews highlight their strong technical competence and effective project management, with 100% of clients noting their professionalism and ability to deliver quality work on time. The company is praised for their communication skills and proactive problem-solving, fostering reliable partnerships across various industries.
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$1,000+$25 - $49 / hr10 - 49
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See all 1 projectsInspeero Technologies is a mobile app development company that excels in delivering functional and timely solutions, as evidenced by their involvement in creating a social networking app with notable features such as geolocation and texting. Positive feedback is unanimous, with 100% of reviewers praising their rapid communication and efficiency in meeting deadlines. Their ability to address issues swiftly further distinguishes their service.
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$1,000+$25 - $49 / hr10 - 49
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See all 3 projectsPangara is a versatile company specializing in web and mobile app development, recognized for its high-quality developers and efficient project execution. The majority of reviewers, approximately 90%, praise the company's technical expertise and responsiveness. While many commend their rapid delivery and outstanding design insights, some suggest improvements in their invoicing model and communication consistency. Overall, Pangara is well-regarded for delivering successful projects across diverse industries.
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$10,000+$25 - $49 / hr50 - 249Córdoba, Argentina
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See all 7 projectsOutside the Box is a company specializing in Enterprise App Modernization, focusing on enhancing communication, real-time updates, and secure information sharing between service providers and clients. Reviews highlight their impressive project management skills, timely deliveries, and effective communication, with 100% of reviewers expressing satisfaction and noting increased client engagement and streamlined processes.
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$10,000+$25 - $49 / hr10 - 49Mumbai, India
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See all 1 projectsCodezen Tech Solutions is a web development company praised for its quick execution and effective project management, with 100% of reviewers highlighting their ability to exceed expectations. While their task prioritization could improve, clients, such as a bamboo manufacturing consultant, commend their ability to enhance competitive web presence within a modest budget.
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$1,000+Undisclosed50 - 249Mumbai, India
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See all 1 projectsSynergetics Cloud Consulting is a distinguished cloud consulting firm specializing in Azure Cloud solutions. Their services are highly rated, with 100% positive feedback lauding their expertise and support. Clients consistently highlight the team's deep Azure knowledge and their proactive assistance in cloud migration and ongoing support.
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$1,000+$50 - $99 / hr10 - 49
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See all 1 projectsDataGenius Technologies LLC is a custom software development company specializing in UI design and development. The overall feedback is overwhelmingly positive, with clients praising their helpfulness, knowledge, and communication skills. The company has played a significant role in assisting clients to meet their business objectives and foster growth in their respective sectors.
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$10,000+$25 - $49 / hr50 - 249Bengaluru, India
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See all 7 projectsRokkun is a comprehensive technology solutions provider, specializing in web development, app creation, and custom software applications. Reviews highlight their proactive project management, flexibility, and commitment to client needs, with 100% positive feedback regarding their responsiveness and innovation. Rokkun is praised for delivering projects on time and within budget, and for their strong partnerships with clients.
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$25,000+$50 - $99 / hr250 - 999
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See all 4 projectsDevelonica Inc., previously known as Aplana Software Services, is a versatile software development company that offers comprehensive tech consulting and development services. Reviews indicate a high level of client satisfaction, with around 90% praising their effective project management, communication, and innovative solutions. Clients appreciate their flexibility, attention to detail, and ability to integrate seamlessly with existing teams.
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$10,000+$25 - $49 / hr250 - 999Minneapolis, MN
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See all 1 projectsContata is a software development company specializing in creating web-based applications. The reviews highlight their strong project management skills and ability to deliver on time, with 100% of reviewers noting improved user engagement and satisfaction. Clients praise their responsiveness and commitment, with no recommendations for improvement, showcasing a high level of client satisfaction.
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$25,000+$50 - $99 / hr250 - 999Oak Brook, IL
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See all 1 projectsSenecaGlobal is a software development company specializing in staff augmentation services, focusing on building and testing software using technologies like C#, ASP.NET, and SQL Server. According to the reviews, 100% of the feedback is positive, highlighting their high-quality work, timely delivery, and cost-saving impact. Clients appreciate their talented developers and effective project management.
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Undisclosed$100 - $149 / hr50 - 249
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See all 2 projectsiPhone Developer is a specialized mobile app development company known for creating advanced and innovative mobile applications, particularly for iOS and Android platforms. Their team is praised for their strong expertise, commitment to quality, and transparent communication. Client feedback is overwhelmingly positive, with 100% of reviewers highlighting their outstanding performance and successful project outcomes.
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UndisclosedUndisclosed1,000 - 9,999Helsinki, Finland
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Nordcloud is a cloud consulting & SI company launched in 2006. Their services include cloud consulting & SI and IT managed services.
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UndisclosedUndisclosed10 - 49
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See all 9 projectsReality Tech is a consulting company specializing in Enterprise Application Modernization, excelling in services such as SharePoint and O365 migrations. Reviews indicate a 100% positive feedback rate, highlighting their project management, professionalism, and expertise in digital transformation. Many reviewers appreciate their clear communication and on-time delivery, with no suggested areas for improvement.
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$50,000+$50 - $99 / hr10 - 49Warszawa, Poland
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See all 2 projectsSkillsForge is a software development company known for its expertise in custom software solutions, particularly in Python Django, .NET Core, and Azure. Across their reviews, clients consistently praise their professionalism, responsiveness, and ability to exceed expectations, with 100% of reviews highlighting their strong customer support and effective project management. They are recognized for quickly understanding business needs and delivering high-quality, user-friendly products.
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$1,000+$50 - $99 / hr2 - 9Wrocław, Poland
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See all 1 projectsTheFreshApps is a software development company specializing in building internal software, cloud servers, and online applications. The feedback is overwhelmingly positive, with 100% of reviewers praising their rapid understanding and execution of project requirements, effective workflow, and impressive outcomes, such as improved management control and increased website visualizations.
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$10,000+$25 - $49 / hr10 - 49Thane, India
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See all 6 projectsNeolite Infotech India Pvt Ltd is a diversified IT services company specializing in web development, e-commerce solutions, and digital marketing. They have received overwhelmingly positive feedback, with approximately 95% of reviewers highlighting their professionalism, support, and cost-effectiveness. Clients appreciate their meticulous project management and transparent communication, contributing to successful outcomes across various projects.
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$10,000+$150 - $199 / hr50 - 249London, England
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See all 5 projectsMoonshot Partners is a versatile technology and digital solutions provider, excelling in areas such as product development, SEO strategy, and web design. Feedback indicates a high satisfaction rate, with over 90% of reviews highlighting their technical expertise, effective project management, and strong cultural alignment. Clients appreciate their innovative solutions and efficient communication, fostering successful collaborations.
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$5,000+$25 - $49 / hr10 - 49Indore, India
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See all 1 projectsRatufa Software Technologies Private Limited is a versatile software development company specializing in mobile and web solutions. Clients have praised their professionalism, with 90% of projects delivered on time and a quality rating of 4 out of 5. The company is noted for its helpfulness and flexibility in customer dealings.
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$1,000+$25 - $49 / hr10 - 49Sahibzada Ajit Singh Nagar, India
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See all 6 projectsWDMtech is a versatile IT solutions provider, specializing in web development, software solutions, and data integration across various industries, including real estate and marine. Reviews highlight their technical proficiency, problem-solving capabilities, and adaptability, with positive feedback centered on their effective communication and project management. Approximately 80% of reviewers praise their responsiveness and flexibility, though some note occasional communication delays.
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$5,000+Undisclosed10 - 49
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See all 3 projectsSkipfour LLC is a versatile software development company specializing in web and app development across multiple platforms, including PHP, Node.js, React, Java, and Swift. Client feedback highlights their strong project management skills, effective communication, and ability to deliver quality products. Approximately 100% of reviews praise their adaptability and professionalism, with clients noting their skill in managing complex projects and maintaining timelines.
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$10,000+$50 - $99 / hr50 - 249Ahmedabad, India
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See all 3 projectsTMedia Business Solution Pvt. Ltd. is a technology solutions company specializing in developing custom applications, database tools, and dashboards. Reviewers universally praise their project management and communication, with 100% expressing satisfaction with the deliverables, timeliness, and technical expertise. Clients commend their ability to adapt quickly to challenges and deliver high-quality results without needing redevelopment.
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List of the Top 15 Legacy Modernization Services
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$50,000+$50 - $99 / hr250 - 999Miami, FL
Ability to deliver
36.9/40.019.2/20 Reviews9.9/10 Clients & Experience7.8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$5,000+< $25 / hr1,000 - 9,999San Jose, CA
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 - 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+$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 - 9,999Atlanta, GA
Ability to deliver
37.4/40.017.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$50 - $99 / hr1,000 - 9,999L'viv, Ukraine
Ability to deliver
38.8/40.019/20 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 -
$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 -
UndisclosedUndisclosed1,000 - 9,999Atlanta, GA
Ability to deliver
34.1/40.016.8/20 Reviews10/10 Clients & Experience7.3/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
38/40.018.4/20 Reviews10/10 Clients & Experience9.6/10 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 - 249Rybnik, Poland
Ability to deliver
35.1/40.017.2/20 Reviews10/10 Clients & Experience7.9/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$10,000+$25 - $49 / hr250 - 999Stuttgart, Germany
Ability to deliver
37.9/40.018.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$100 - $149 / hr50 - 249Belfast, Northern Ireland
Ability to deliver
36.9/40.017.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$5,000+< $25 / hr50 - 249Ahmedabad, India
Ability to deliver
36.9/40.018/20 Reviews9.6/10 Clients & Experience9.3/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$100,000+$25 - $49 / hr50 - 249Melbourne, Australia
Ability to deliver
32.9/40.016.4/20 Reviews8.4/10 Clients & Experience8.1/10 Market PresenceService focus
40% Enterprise App Modernization60% 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 -
$25,000+$50 - $99 / hr250 - 999Warszawa, Poland
Ability to deliver
34.6/40.016/20 Reviews10/10 Clients & Experience8.6/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$250,000+$50 - $99 / hr250 - 999Broomfield, CO
Ability to deliver
37.5/40.017.6/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$25,000+$50 - $99 / hr50 - 249Prague, Czech Republic
Ability to deliver
38.5/40.019.4/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$5,000+$50 - $99 / hr10 - 49Brno, Czech Republic
Ability to deliver
30.4/40.017.4/20 Reviews8.2/10 Clients & Experience4.8/10 Market PresenceService focus
60% Enterprise App Modernization40% 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.