Top Application Modernization Services
-
$5,000+$25 - $49 / hr2 - 9Kharkiv, Ukraine
Services provided
See all 1 projectsSpodar Group is a software development company specializing in optimizing and refactoring code for complex email systems. Their exceptional troubleshooting skills and 24/7 availability have led to the successful resolution of critical issues, as evidenced by their ability to close all support tickets permanently. The company maintains a strong project management approach, with 100% of reviewers highlighting their effective communication and commitment to staying on budget and on time.
-
UndisclosedUndisclosed1,000 - 9,999Cluj-Napoca, Romania
Services provided
See all 1 projectsNTT DATA Romania is a custom software development company known for their expertise in developing and enhancing software solutions using technologies such as C# and Angular. Their collaboration with clients has resulted in significant performance improvements, such as a 50% increase in conversion rates. Reviewers consistently praise their effective project management and technical capabilities, with no major areas for improvement noted.
-
$25,000+$25 - $49 / hr50 - 249
Services provided
See all 7 projectsFocalCode is a boutique agency offering digital marketing and development services, including website creation and marketing campaigns. Reviews indicate a generally positive experience, noting their creativity, ROI-driven approach, and seamless collaboration. However, 25% of reviews report significant issues involving financial disputes and misrepresentation, highlighting a need for caution. Overall, 75% of clients appreciate their proactive and integrated team dynamics.
-
$1,000+$25 - $49 / hr2 - 9Ahmedabad, India
Services provided
See all 10 projectsGeminate Consultancy Services is a specialized IT firm focusing on Odoo ERP customization and development. Their services are highly regarded, with reviewers frequently praising their quick response times, expertise, and ability to align with client needs without extensive detail. Approximately 90% of reviews highlight their strong project management skills and adaptability in communication, while clients consistently emphasize trust and effective collaboration with the company's founder.
-
$1,000+< $25 / hr10 - 49Gandhinagar, India
Services provided
See all 1 projectsMeritorious CodeCrafters Private Limited is a proficient talent acquisition firm specializing in providing qualified IT professionals tailor-fit to clients' project needs. Reviews reflect a 100% positive feedback rate, highlighting their exceptional project management, responsiveness, and ability to deliver candidates quickly. While communication during peak periods could improve, they are praised as a reliable partner.
-
$10,000+$50 - $99 / hr10 - 49Horoměřice, Czech Republic
Services provided
See all 2 projectsSmal Software Development is a software development company specializing in modernizing legacy systems and optimizing e-commerce solutions. Clients commend their quick adaptability, technical competence, and cultural alignment, with 100% of reviews highlighting their ability to meet business goals and improve operational efficiency. Both reviewers emphasized no areas for improvement, indicating consistent high satisfaction.
-
$10,000+$25 - $49 / hr250 - 999Zheng Zhou Shi, China
Services provided
See all 1 projectsHISOFT HENAN co. LTD is an Internet software technology development and consulting company with expertise in management software, Internet systems, and mobile app development. Reviewers consistently express high satisfaction with their services, highlighting professional technical skills, excellent customer service, and stable personnel. Notably, 100% of the feedback is positive, emphasizing the company's capability to enhance enterprise IT functions efficiently.
-
$25,000+Undisclosed10 - 49Hong Kong, Hong Kong
Services provided
See all 4 projectsAppicIDEA IT Solutions Limited is a comprehensive software development company specializing in mobile apps, web apps, and bespoke software solutions. Reviews indicate a high level of client satisfaction, with approximately 90% of feedback highlighting their efficiency, responsiveness, and client-centric approach. Key themes include their ability to deliver projects on time and their innovative use of technology to enhance user experiences.
-
$5,000+$25 - $49 / hr2 - 9
Services provided
See all 1 projectsZablesoft is a proficient software development company specializing in Microsoft technologies, including .NET and SQL Server, with noted expertise in interface design. All feedback is positive, highlighting their technical knowledge, excellent project management, and eagerness to communicate. The company is highly recommended for organizations seeking robust software solutions.
-
$5,000+$25 - $49 / hr2 - 9
Services provided
See all 1 projectsFornax is a data engineering and technology consulting firm that excels in managing and optimizing data warehouses and building ETL pipelines. Their services are well-received, with 100% of reviewers highlighting their collaborative approach and professional delivery. Areas for improvement include empowering junior team members to address client bottlenecks more proactively.
-
$1,000+$50 - $99 / hr2 - 9Bangkok, Thailand
Services provided
See all 1 projectsAsiaHabit Digital Co.,Ltd. is a digital solutions provider specializing in custom B2C e-commerce development and automation. Client feedback highlights their expertise and seamless project implementation, leading to measurable business success. With 100% positive reviews, clients commend their effective communication and market-leading results.
-
$10,000+$25 - $49 / hr50 - 249
Services provided
See all 2 projectsNCompass TechStudio is a versatile technology partner offering comprehensive development, DevOps, and mobile app services. Reviews highlight their exceptional technical expertise, rapid delivery, and strong alignment with project goals. Clients appreciate their flexibility and ownership, with 100% of reviewers citing timely delivery and responsiveness. Overall, NCompass TechStudio is commended for its professional project management and client-centric approach.
-
$10,000+$50 - $99 / hr50 - 249
Services provided
See all 1 projectsZologics Innovative Technologies is an IT company praised for its well-qualified team and effective project management. Receiving 100% positive feedback, all reviewers highlighted timely project delivery and quick responsiveness, with 10/10 ratings for their performance. Their combination of high ratings and cost-effective pricing was consistently noted as a decisive factor for selection.
-
$50,000+$50 - $99 / hr10 - 49Bloomfield Hills, MI
Services provided
See all 5 projectsCivicSoft is a development company specializing in customized software solutions and cloud management. Reviews consistently highlight their professionalism, effective communication, and ability to deliver quality products quickly. An impressive 100% of reviewers commend their project management skills, while 80% appreciate the personal touch and direct access to key personnel, such as the CEO, to ensure tailored solutions and ongoing support.
-
$1,000+$25 - $49 / hr10 - 49Navi Mumbai, India
Services provided
See all 2 projectsCentillion is a web development company highly praised for its professional approach and effective project management. With an 80% positive feedback rate, clients appreciate their enthusiasm and commitment to understanding clients' needs, though some suggest enhancing client communication with in-person meetings.
-
$5,000+$50 - $99 / hr2 - 9Milano, Italy
Services provided
See all 4 projectsKoent is a versatile technology solutions provider specializing in mobile app development and software modernization. Reviews highlight their strong project management skills and commitment to understanding client needs, with an exemplary customer engagement rate and timely delivery. Approximately 90% of reviewers commend Koent's effort to tailor solutions to specific business processes, though some desired more in-person meetings.
-
$1,000+< $25 / hr10 - 49Gandhinagar, India
Services provided
See all 5 projectsRDFlex is an IT services company specializing in Odoo development and customization. Reviews indicate a mixed reputation; approximately 60% of feedback is positive, praising their flexibility, expertise, and project management, while about 40% highlight significant issues with communication and delivery timelines. Clients appreciate their technical proficiency but suggest improvements in commitment and responsiveness.
-
$5,000+$25 - $49 / hr10 - 49
Services provided
See all 2 projectsZuccotech is a development company specializing in building platforms, with expertise in both backend and frontend development, as well as QA testing. The company receives predominantly positive feedback, with over 90% of reviews highlighting satisfaction with quality, project management, and technical expertise, especially in blockchain and influencer marketing platforms. However, some reviewers have noted a need for improved communication skills and schedule flexibility.
-
$10,000+$100 - $149 / hr10 - 49Wrocław, Poland
Services provided
See all 1 projectsCloud Drift is a cloud technology solutions provider specializing in digital asset delivery, cloud adoption, and software development. The company is consistently praised for its efficiency, flexibility, and ability to meet client demands swiftly, with 100% positive feedback on their skillset and project management. Clients commend Cloud Drift for their collaborative nature and transformative impact on projects.
-
$1,000+< $25 / hr10 - 49Gurugram, India
Services provided
See all 4 projects86 Agency is a versatile web development company offering full-stack development, website design, maintenance, and email campaign support. The reviews highlight their high-quality deliverables, strong project management, and excellent communication, with 100% positive feedback. Clients appreciate their responsiveness, proactive approach, and consistency, with 66% of reviewers specifically mentioning these qualities.
-
Undisclosed< $25 / hr2 - 9Chandigarh, India
Services provided
See all 3 projectsBLUSHING Technology is a digital marketing and web development company recognized for its exceptional design and project management skills. Clients commend the company for delivering high-quality work within budget, with 100% of reviewers highlighting timely delivery and effective communication. This firm is highly regarded for its ability to meet client expectations and provide good value for cost.
-
$5,000+$50 - $99 / hr2 - 9
Services provided
See all 1 projectsManucode is an IT services company specializing in software development, IT team building, and outsourcing, with a focus on OutSystems technology. Reviews highlight their high-quality solutions, proactive communication, and timely delivery, with 100% of reviewers noting their efficiency and alignment with client values. The company is praised for good value, fitting well within budget constraints.
-
$10,000+$50 - $99 / hr2 - 9
Services provided
See all 2 projectsTruesight Technologies is a software development company specializing in protocol implementation and product industrialization. With a focus on delivering tailored solutions and demonstrating exceptional technical skills, 100% of reviewers praise their smooth project management and effective communication. Reviewers highlight their ability to optimize systems and ensure successful project delivery.
-
$5,000+Undisclosed50 - 249Auckland, New Zealand
Services provided
Adaptiv is an Auckland, New Zealand-based Enterprise App Modernization company. The team specializes in Enterprise App Modernization and Application Management & Support.
Read more -
$25,000+Undisclosed10 - 49
Services provided
See all 4 projectsCoretec Inc. is a versatile software development company, providing services such as web and app development, backend upgrades, and custom platform creation. The majority of feedback is positive, with approximately 90% of reviewers praising their communication, professionalism, and timely delivery. Clients appreciate their flexible, client-focused approach, though some note challenges with onboarding due to rapid growth.
-
$1,000+< $25 / hr2 - 9
Services provided
See all 2 projectsZTABS is a software development company specializing in designing and implementing complex web platforms and systems. They have received highly positive feedback for their work, with notable praise for their effective project management and clear communication, mentioned in 100% of reviews. Clients appreciate their availability, quick delivery, and the ability to accommodate dynamic project needs, although some suggest improvements in collaborative design tools.
-
$5,000+$25 - $49 / hr2 - 9
Services provided
See all 1 projectsCOPODS DESIGN TECHNOLOGY SOLUTIONS LLP is a UI/UX design company known for its thorough discovery process and collaborative approach. Reviewers highlight their expertise, with 100% of feedback expressing satisfaction with their project management and design execution. They are commended for their entrepreneurial mindset and ability to provide honest feedback.
-
$5,000+$25 - $49 / hr10 - 49Vinnytsia, Ukraine
Services provided
See all 3 projectsEvenmore is a front-end development company renowned for its expertise in providing skilled developers and effective solutions for projects involving technologies like React and Angular. Client feedback is overwhelmingly positive, with 100% of reviewers praising their problem-solving skills, timely delivery, and high-quality code. Their ability to simplify complex tasks and attention to detail are consistently highlighted.
-
$1,000+< $25 / hr10 - 49Mira Bhayandar, India
Services provided
See all 2 projectsReputableTechnologies pvt. ltd. is an e-commerce and mobile app development company noted for its strong project management and supportive team. With 100% positive feedback, clients appreciate their ability to meet deadlines and deliver quality products, such as e-commerce platforms and mobile applications, at competitive prices. Their expertise in integrating geolocation and email notifications is frequently highlighted by reviewers.
-
$1,000+< $25 / hr10 - 49Mumbai, India
Services provided
See all 1 projectsCodes 'n' Coffee Tech. is a software development company specializing in creating custom CRM and practice management solutions. The overall feedback from reviews is highly positive, with notable praise for their efficient project management and innovative UX design. Approximately 100% of reviewers highlight improvements in work processes, while some suggest more thorough initial testing.
Share your project goals, and we’ll connect you with verified partners who fit your budget and timeline.
Get My Matches
Tell us what you need — we’ll match you with top agencies in minutes.
Get My MatchesWhy Trust Clutch
At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.
Every review on Clutch undergoes a rigorous, human-led verification process to make sure it’s valid. Our team of specialists confirms the identity of each reviewer, ensures the project is legitimate, and only publishes reviews that meet our strict criteria.
Verification doesn’t stop at the point of publication. Our Trust & Safety team routinely audits older reviews against our guidelines. When reviews fall short of our standards, we remove them.
We evaluate service providers using a structured methodology that combines:
- In-depth client interviews and ratings
- Comprehensive project details
- Market presence
- Portfolio examples and industry recognition
This data powers tools like the Leaders Matrix, which helps you compare agencies directly. Our research team curates rankings by weighing verified reviews most heavily, so the most trusted and experienced providers rise to the top.
Using this unique combination of verified client feedback and provider-supplied insights, Clutch distills the most important details into clear, digestible summaries so you have everything you need to make confident, informed decisions quickly.
We take fraud seriously. Providers who violate our guidelines may face lower rankings, restricted visibility, or removal from the platform altogether.
Clutch’s commitment to transparency is ongoing. We’re constantly refining our systems to protect the integrity of reviews and support you in finding the right agency.
List of the Top 15 Legacy Modernization Services
-
$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 / 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 / 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 -
$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
39.5/40.019.6/20 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+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
38.9/40.019.4/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr50 - 249San Francisco, CA
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 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 -
$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 -
$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 -
$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 -
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+$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 -
$10,000+$25 - $49 / hr10 - 49Ahmedabad, India
Ability to deliver
37.6/40.018.6/20 Reviews9.6/10 Clients & Experience9.5/10 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 -
$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
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.