Top Application Modernization Services
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$10,000+Undisclosed50 - 249Lemesos, Cyprus
Services provided
See all 5 projectsCallCTO is a FinTech solutions provider known for its expertise in developing secure, scalable financial platforms. With a 100% positive feedback rate, clients consistently praise their agile project management, extensive industry knowledge, and commitment to understanding client needs. Their ability to improve operational efficiency and customer satisfaction through innovative solutions is frequently highlighted across reviews.
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$10,000+$50 - $99 / hr2 - 9Warszawa, Poland
Services provided
See all 2 projectsKosmosKod is a web development company specializing in creating customized online booking systems. Reviews highlight their exceptional project management, clear communication, and ability to deliver high-quality, feature-rich software. Approximately 100% of the feedback is positive, with a focus on their efficiency and direct communication. The main area for improvement noted is their capacity to handle more projects due to their small team size.
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$100,000+$150 - $199 / hr50 - 249New York, NY
Services provided
See all 4 projectsStride Consulting is a software development and consulting firm specializing in Agile methodologies and technical solutions, such as iOS and web app development, staff augmentation, and business consulting. Their reviews highlight a strong commitment to project management excellence and adaptability, with 100% of clients praising their collaborative approach and technical expertise. Clients appreciate Stride Consulting's ability to integrate seamlessly with existing teams, provide high-quality deliverables, and support business goals efficiently.
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$25,000+$50 - $99 / hr50 - 249Hanoi, Vietnam
Services provided
See all 4 projectszen8labs is a digital solutions company specializing in UX/UI design, mobile app development, and digital marketing optimization. Reviews highlight their exemplary project management, timely delivery, and user-centered approach, with 100% positive feedback emphasizing their ability to translate user data into actionable improvements and exceed client expectations. Clients appreciate their budget-friendly services and strong communication skills.
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$25,000+$100 - $149 / hr50 - 249
Services provided
See all 20 projectsAppiskey is a diverse technology firm specializing in app and web development, with projects ranging from telemedicine platforms to emergency services apps. The company is praised for its commitment and collaborative approach, with approximately 86% of reviews highlighting their professionalism and high-quality outcomes. Despite some challenges with timelines and communication, 71% of clients express satisfaction with the final product, reflecting Appiskey's dedication to client success.
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$10,000+$25 - $49 / hr50 - 249Birmingham, England
Services provided
See all 7 projectsBlueberry Consultants is a bespoke software development firm, praised for their tailored solutions and robust project management. Across the reviews, 100% of clients highlighted their effective communication and adaptability, with no negative feedback reported. Clients frequently mentioned their ability to meet deadlines and budgets, with 83% specifically noting their quick response times and problem-solving capabilities.
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$25,000+$25 - $49 / hr50 - 249Sofia, Bulgaria
Services provided
See all 8 projectsPLAN A is a company specializing in IT staff augmentation, specifically for Enterprise Application Modernization projects. They have consistently demonstrated effective project management, timely delivery, and enhanced client satisfaction. Notably, 100% of the feedback highlights their efficient communication and strong organizational model, resulting in improved project outcomes.
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$25,000+$25 - $49 / hr50 - 249Plovdiv, Bulgaria
Services provided
See all 2 projectsCodeCoda Ltd. is a software development company specializing in creating innovative solutions, such as self-service platforms and backend systems for complex data management needs. Reviews highlight their exceptional problem-solving skills, high-quality code delivery, and effective project management. Impressively, 100% of reviewers commend their ability to tackle unique challenges, and their dedication is praised, with no significant areas for improvement noted.
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$5,000+$150 - $199 / hr10 - 49Salt Lake City, UT
Services provided
See all 12 projectsKsense Technology Group LLC is a technology firm specializing in Enterprise Application Modernization, offering tailored software solutions like custom web-based tools for improved data management. Their services receive unanimous praise, particularly for their responsiveness and innovative approach, with 100% of reviewers highlighting their ability to enhance user experience and reduce administrative burdens effectively.
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$5,000+< $25 / hr50 - 249Jaipur, India
Services provided
See all 6 projectsTechno Softwares is a versatile IT solutions company, excelling in software development, CRM and ERP systems, mobile app development, and digital marketing. They consistently receive high praise for their commitment to customer needs and project delivery, with over 90% of reviews highlighting their timely execution and professionalism. Their ability to align with diverse business objectives is frequently commended by clients.
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$50,000+$150 - $199 / hr50 - 249Lakewood, CO
Services provided
See all 1 projectsModernize is a staffing and recruiting company specializing in providing skilled contract employees for application testing, with a focus on transitioning them to full-time roles. Client feedback indicates a 100% satisfaction rate with their ability to meet staffing needs on time and within budget, highlighting their adaptability and excellent project management.
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$10,000+$100 - $149 / hr250 - 999London, England
Services provided
See all 11 projectsSoftwire is a versatile software development company providing solutions tailored to client needs, including web development, custom software, and platform migration. Across various industries, 100% of reviewers highlight their strong project management, technical expertise, and commitment to quality. Additionally, they are commended for their agile processes and effective problem-solving skills, consistently delivering projects on time and within budget.
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$50,000+$150 - $199 / hr10 - 49Bellbrook, OH
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See all 2 projectsSparkbox is a web development company specializing in responsive website design and frontend architecture, notably providing pattern libraries and CMS migrations. Client reviews highlight their exceptional technical skills and project management, with around 85% of feedback focusing on their ability to improve user engagement and internal processes. Clients appreciate their educational approach and seamless team integration, with no major areas identified for improvement.
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$10,000+$25 - $49 / hr10 - 49Centurion, South Africa
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See all 1 projectsTypeDev.io is a development company specializing in building web applications, web widgets, and mobile apps. The overall feedback is overwhelmingly positive, with 100% of reviewers praising their timely delivery, excellent communication, and ability to expand their team while maintaining talent. The company is also recognized for offering good value for cost.
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$50,000+$100 - $149 / hr2 - 9London, England
Services provided
See all 1 projectsSeb Azzo is a development company specializing in creating and maintaining digital brand guidelines. They have received overwhelmingly positive feedback, with clients praising the simplicity and intuitive nature of their products. Approximately 100% of reviewers commend their ongoing communication and commitment to project success, highlighting their flexibility and collaborative approach to product development.
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$10,000+$25 - $49 / hr10 - 49Oviedo, Spain
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See all 6 projectsABAMobile is a mobile app development company specializing in creating tailored solutions for diverse industries, including environmental, transport, and lighting sectors. Across their reviews, 80% of clients praise their adaptability and strong project management skills, while appreciating their ability to deliver projects on time and within budget. However, a few clients suggest that ABAMobile could be more proactive in providing advice and solutions.
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$1,000+Undisclosed50 - 249Dhaka, Bangladesh
Services provided
See all 2 projectsGenesys Softwares LLC is a full-stack software development company specializing in creating scalable platforms and automating complex workflows. The company has a strong track record of delivering tailored solutions, as evidenced by positive feedback on Clutch.co, where 100% of reviewers highlighted their responsiveness and technical capabilities, resulting in enhanced operational efficiency and user experience.
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$10,000+$25 - $49 / hr1,000 - 9,999Princeton, NJ
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See all 11 projectsCygnet.One is a comprehensive IT solutions provider, specializing in software development, app development, system integration, and more. Their reviews reflect an overall positive client sentiment, with approximately 90% of comments highlighting their technical expertise and project management efficiency. Clients frequently commend Cygnet.One for their skilled developers and effective communication, although occasional improvements in team member experience and time zone communication are suggested.
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$10,000+$50 - $99 / hr50 - 249Eschborn, Germany
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See all 2 projectsUHP Software GmbH is a software development company renowned for its expertise in test automation and scalable web application solutions. Clients consistently laud their speed, knowledge, and creativity, with 100% positive feedback highlighting their reliable communication, timely delivery, and alignment with client needs. Approximately 50% of reviewers commend their ability to provide expert advice and valuable consulting.
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$5,000+$25 - $49 / hr10 - 49Kraków, Poland
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See all 8 projectsCleverCrew is a versatile software development company specializing in front-end and back-end solutions, app development, and database management. Reviews highlight their punctuality and effective communication, with 100% of reviewers appreciating their project management and integration with teams. Clients commend their quality-to-cost ratio and innovative problem-solving, although some suggest growth in machine learning expertise and English proficiency.
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$10,000+$25 - $49 / hr50 - 249Montevideo, Uruguay
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See all 1 projectsDVelop Software Solutions is a software development firm specializing in building web and mobile platforms, with expertise in GeneXus. Reviewers emphasize the company’s professionalism, commitment, and effective project management, noting 100% satisfaction with the quality and success of their projects. They are praised for delivering on time and within budget, functioning seamlessly as an extension of clients' teams.
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$25,000+$50 - $99 / hr10 - 49Zagreb, Croatia
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See all 3 projectsLeapwise is a technology services company specializing in customized software development and integration solutions, particularly for BSS/OSS platforms. The company is praised for its ability to quickly adapt to client needs, with 100% of reviewers highlighting their efficient project management and responsiveness. Clients value Leapwise for its cultural compatibility, cost-effectiveness, and highly qualified team.
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$50,000+$100 - $149 / hr10 - 49Jenison, MI
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Trailhead Technology Partners is a technology service provider specializing in web-based architecture overhauls, portal development, and e-commerce solutions. The company receives overwhelmingly positive feedback, with 100% of reviewers praising their commitment and project management. Notably, they transformed Montage Furniture Services into a technological leader, achieving significant operational improvements and financial savings.
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$1,000+< $25 / hr10 - 49Ahmedabad, India
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See all 3 projectsMegaMinds United is a software development company specializing in Laravel application development, responsive and mobile development, and Progressive Web App (PWA) frameworks. The company is praised for its professionalism, timely delivery, and effective communication, with 100% of reviewers noting their responsiveness and quality of work. Clients appreciate their alignment with company values and the positive impact on business growth.
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$1,000+$25 - $49 / hr50 - 249
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See all 9 projectsiQuasar LLC is a versatile IT services company specializing in website development, software modernization, and graphic support. Reviews highlight their strong communication, timeliness, and flexibility, with approximately 90% of clients noting impressive project management and value for cost. Many clients appreciate the seamless integration with their teams and the ability to deliver quality outcomes on time and within budget.
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UndisclosedUndisclosed1,000 - 9,999Warszawa, Poland
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See all 42 projectsSii Poland is a versatile IT services and consulting company that offers a wide range of solutions, including test automation, data strategy execution, Salesforce development, and SAP rollouts. The reviews consistently highlight their technical proficiency, responsiveness, and ability to deliver projects on time. Approximately 90% of reviewers commend their project management and technical skills, emphasizing their reliability and collaborative approach.
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$25,000+$100 - $149 / hr10 - 49Newquay, England
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See all 1 projectsflowmoco is a software development company that specializes in creating bespoke digital solutions, such as a collaborative coastal safety app. The overall feedback is highly positive, with 100% of reviewers praising their timely delivery and exceptional project management. Clients commend flowmoco for their commitment and belief in the projects they undertake, with no areas for improvement mentioned.
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$1,000+< $25 / hr10 - 49Jaipur, India
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See all 24 projectsArixLabs (Formerly FlutterFlowDevs) is a development agency specializing in mobile and web application development, particularly using low-code platforms like FlutterFlow. They have received mixed reviews, with approximately 70% of clients praising their project management and delivery timelines, particularly highlighting their dedication and responsiveness. However, a minority of clients, around 30%, have mentioned issues with project delays and communication. Their technical expertise, especially in Flutter, is consistently noted as a strength.
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$10,000+$100 - $149 / hr2 - 9Chicago, IL
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See all 9 projectsLakeview Labs is a mobile app development company with a strong emphasis on personalized client engagement and strategic project management. Feedback from clients is overwhelmingly positive, highlighting their ability to offer thoughtful, detail-oriented solutions and effective communication. Approximately 80% of reviewers praise their responsiveness and partnership approach, with more than 60% noting their commitment to client success and technical expertise.
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$5,000+$25 - $49 / hr10 - 49
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See all 13 projectsHapy Co is an innovative software development firm specializing in creating customized solutions to streamline operations and enhance user experience. The company has received overwhelmingly positive feedback, with 100% of reviewers highlighting their adaptability and effective communication. However, a common suggestion for improvement, noted by 50% of the reviewers, is faster project turnover.
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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
35/40.019.6/20 Reviews10/10 Clients & Experience5.4/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr250 - 999Miami, FL
Ability to deliver
35.3/40.018.8/20 Reviews10/10 Clients & Experience6.5/10 Market PresenceService focus
25% Enterprise App Modernization75% Other -
$5,000+< $25 / hr1,000 - 9,999
Ability to deliver
31.9/40.016.6/20 Reviews10/10 Clients & Experience5.3/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$5,000+$50 - $99 / hr10 - 49Brno, Czech Republic
Ability to deliver
31.6/40.017.4/20 Reviews9.8/10 Clients & Experience4.4/10 Market PresenceService focus
60% Enterprise App Modernization40% Other -
$50,000+$50 - $99 / hr250 - 999Wrocław, Poland
Ability to deliver
31.3/40.015.8/20 Reviews10/10 Clients & Experience5.5/10 Market PresenceService focus
40% Enterprise App Modernization60% Other -
$10,000+< $25 / hr250 - 999Ahmedabad, India
Ability to deliver
38.1/40.020/20 Reviews10/10 Clients & Experience8.1/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$25,000+$25 - $49 / hr1,000 - 9,999Orlando, FL
Ability to deliver
36.6/40.020/20 Reviews10/10 Clients & Experience6.6/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$100,000+$150 - $199 / hr50 - 249Southborough, MA
Ability to deliver
30.2/40.015.8/20 Reviews10/10 Clients & Experience4.4/10 Market PresenceService focus
50% Enterprise App Modernization50% Other -
$25,000+$25 - $49 / hr250 - 999Jaipur, India
Ability to deliver
33.9/40.018.2/20 Reviews10/10 Clients & Experience5.7/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$100,000+$50 - $99 / hr1,000 - 9,999Oakland, CA
Ability to deliver
29.8/40.015.2/20 Reviews8.8/10 Clients & Experience5.9/10 Market PresenceService focus
45% Enterprise App Modernization55% Other -
$50,000+$50 - $99 / hr1,000 - 9,999New York, NY
Ability to deliver
35.7/40.020/20 Reviews10/10 Clients & Experience5.7/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
UndisclosedUndisclosed1,000 - 9,999Atlanta, GA
Ability to deliver
31.1/40.016/20 Reviews10/10 Clients & Experience5.1/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$100 - $149 / hr250 - 999London, England
Ability to deliver
33/40.017.2/20 Reviews10/10 Clients & Experience5.8/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr50 - 249San Francisco, CA
Ability to deliver
37/40.019.8/20 Reviews10/10 Clients & Experience7.2/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$25 - $49 / hr250 - 999Toronto, Canada
Ability to deliver
32.9/40.016.6/20 Reviews10/10 Clients & Experience6.3/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Atlanta, GA
Ability to deliver
32.7/40.016.8/20 Reviews10/10 Clients & Experience5.9/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Kraków, Poland
Ability to deliver
34.3/40.019/20 Reviews10/10 Clients & Experience5.3/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$25,000+$25 - $49 / hr250 - 999Frisco, TX
Ability to deliver
33.7/40.016.6/20 Reviews10/10 Clients & Experience7.1/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$50 - $99 / hr250 - 999Unterschleißheim, Germany
Ability to deliver
32.2/40.017.2/20 Reviews10/10 Clients & Experience5/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
35.2/40.019/20 Reviews10/10 Clients & Experience6.2/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$10,000+$50 - $99 / hr10 - 49Farmington, MI
Ability to deliver
31.5/40.016.6/20 Reviews10/10 Clients & Experience4.9/10 Market PresenceService focus
40% Enterprise App Modernization60% Other -
$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
34.1/40.018.4/20 Reviews10/10 Clients & Experience5.7/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$150 - $199 / hr50 - 249
Ability to deliver
32/40.016.6/20 Reviews10/10 Clients & Experience5.4/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr250 - 999London, England
Ability to deliver
31.8/40.016.4/20 Reviews10/10 Clients & Experience5.4/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$1,000+< $25 / hr50 - 249Jaipur, India
Ability to deliver
32.6/40.017.2/20 Reviews9.4/10 Clients & Experience6/10 Market PresenceService focus
25% Enterprise App Modernization75% Other -
$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
31.5/40.016.6/20 Reviews10/10 Clients & Experience4.9/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$10,000+$25 - $49 / hr50 - 249Portland, OR
Ability to deliver
31.5/40.016.8/20 Reviews10/10 Clients & Experience4.7/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$250,000+$150 - $199 / hr10 - 49Littleton, CO
Ability to deliver
33.3/40.017.6/20 Reviews10/10 Clients & Experience5.7/10 Market PresenceService focus
25% Enterprise App Modernization75% Other -
$50,000+$150 - $199 / hr50 - 249Conshohocken, PA
Ability to deliver
31.5/40.016.2/20 Reviews10/10 Clients & Experience5.2/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$10,000+$50 - $99 / hr250 - 999Hudson, OH
Ability to deliver
31.4/40.016.4/20 Reviews9.8/10 Clients & Experience5.2/10 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.