Top Application Modernization Services
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$50,000+$25 - $49 / hr50 - 249
Services provided
BAPON IT SERVICES LTD is a London, England-based big data company. Founded in 2023, the team focuses on BI & big data consulting & SI and Custom Software Development.
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Undisclosed$100 - $149 / hrFreelancer
Services provided
BitSphere is a Bracknell, England-based custom software development firm. Their services include Custom Software Development and Web Development.
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$25,000+$25 - $49 / hr50 - 249Jacksonville, FL
Services provided
Established in 2022, Blackbird Labs is a midsize Jacksonville, Florida-based custom software development firm. Their services include Custom Software Development and Web Development.
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$5,000+$25 - $49 / hrFreelancerVelika Gorica, Croatia
Services provided
Flyntech is a software development firm. They are based in Velika Gorica, Croatia and have small team of experts. Their services include Custom Software Development and Web Development.
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$10,000+$150 - $199 / hrFreelancer
Services provided
SynapteQ is a Silver Spring, Maryland-based Architectural Design company. Launched in 2025, the team focuses on Architectural Design and IT strategy consulting.
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$1,000+$50 - $99 / hrFreelancer
Services provided
Pierre Studios is a software development firm. Launched in 2000, their team offers Custom Software Development and Web Development.
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$1,000+< $25 / hrFreelancer
Services provided
Small software development firm Synergy Gates, is located in Egypt. The team specializes in Custom Software Development and Application Management & Support.
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UndisclosedUndisclosedFreelancerSan Diego, CA
Services provided
Paul Lewallen Studios is a web development firm. The company is based in San Diego, California. Their services include Web Development and Mobile App Development.
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$10,000+$100 - $149 / hrFreelancerMünchen, Germany
Services provided
Custom software development company Nexens GmbH was launched in 2020. Based in München, Germany, the team offers Custom Software Development and Web Development.
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UndisclosedUndisclosed10 - 49Tigard, OR
Services provided
Axian is an user experience design agency. They are located in Tigard, Oregon, and their services include UX/UI Design and Enterprise App Modernization.
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UndisclosedUndisclosed10 - 49Jacksonville, FL
Services provided
Cloud Tekis LLC is a small Enterprise App Modernization company located in Jacksonville, Florida. The team offers Enterprise App Modernization and Engineering.
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$5,000+Undisclosed10 - 49
Services provided
Established in 2020, Exigea is a custom software development company. The firm offers Custom Software Development and IT staff augmentation.
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UndisclosedUndisclosed2 - 9
Services provided
DBI Technologies Inc., an Enterprise App Modernization company, was founded in 1996. The small team specializes in Enterprise App Modernization and Other Application Development.
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$50,000+$50 - $99 / hr10 - 49Sibiu, Romania
Services provided
EM2Soft is a website development firm. Launched in 2003, the team focuses on Web Development and Application Testing. The firm is based in Sibiu, Romania.
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Undisclosed< $25 / hrFreelancerBassi Muda, India
Services provided
Jaspreet Singh is an IT strategy consulting company. Located in Bassi Muda, India, their small team specializes in IT strategy consulting and Mobile App Development. The company was founded in 2017.
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UndisclosedUndisclosed2 - 9Kiln, MS
Services provided
Professional Solutions Company International, LLC, an Enterprise App Modernization company, was founded in 2012. They provides Enterprise App Modernization and Custom Software Development.
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UndisclosedUndisclosed2 - 9Santa Ana, CA
Services provided
Launched in 2007, AES Global, Inc. Is a small Santa Ana, California-based Enterprise App Modernization company. Their team focuses on Enterprise App Modernization and IT managed services.
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UndisclosedUndisclosed2 - 9Franconia, VA
Services provided
Blue Iris Tech Consulting is a small Franconia, Virginia-based Enterprise App Modernization company. Their services include Enterprise App Modernization and Application Management & Support.
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UndisclosedUndisclosed2 - 9North Bend, OR
Services provided
Launched in 1996, MaintSmart 5.0 CMMS Software is a small Enterprise App Modernization company. Their services include Enterprise App Modernization and cloud consulting & SI.
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$1,000+$50 - $99 / hr10 - 49
Services provided
See all 2 projectsAt BriggrTech, we bring together innovation, technology, and strategy to transform businesses through custom software solutions that drive growth. Our expertise spans across ERP systems, web
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Undisclosed$50 - $99 / hr10 - 49
Services provided
See all 1 projectsQuriv Technologies delivers premium software solutions where quality, performance, and luxury converge. We specialize in developing full-stack platforms, dynamic web applications, and intuitive
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$5,000+$25 - $49 / hr10 - 49T'bilisi, Georgia
Services provided
See all 1 projectsAppelian Software specializes in providing experienced Angular developers with strong technical and soft skills. Client feedback highlights their effective communication, despite occasional challenges, and the proficiency of their middle and senior specialists. Overall, clients appreciate their technical capabilities and suggest continuous improvement in communication and team expansion.
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$5,000+$25 - $49 / hr10 - 49Sarajevo, Bosnia and Herzegovina
Services provided
See all 1 projectsSaloopo offers website development services, specializing in marketing-focused websites using technologies such as HTML, CSS, and JavaScript. The overall feedback from reviews highlights satisfaction with their professional, timely work and effective communication. Clients appreciated their collaborative approach and project management, resulting in positive business outcomes and a desire for continued collaboration.
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UndisclosedUndisclosed10 - 49
Services provided
Headquartered in Jodhpur, India, SAS Shack India is a software development firm. They provide Custom Software Development and Mobile App Development.
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$5,000+$25 - $49 / hr10 - 49São Paulo, Brazil
Services provided
Software development firm Endeken was founded in 2014. The team focuses on Custom Software Development and UX/UI Design.
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$5,000+$25 - $49 / hr10 - 49Lucknow, India
Services provided
Mobizers is a Lucknow, India-based software development company. The team specializes in Custom Software Development and Enterprise App Modernization.
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$1,000+< $25 / hr10 - 49
Services provided
Machwares IT Solutions, a custom software development firm, focuses on Custom Software Development and Enterprise App Modernization. The firm is located in New Delhi, India.
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$5,000+$100 - $149 / hr10 - 49
Services provided
Oktacode.com, a small data analytics company, is located in Białystok, Poland. Their services include BI & big data consulting & SI and cloud consulting & SI.
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$5,000+$25 - $49 / hr10 - 49Shlyakh, Ukraine
Services provided
Rise Line is a custom software development firm. Headquartered in Shlyakh, Ukraine, the agency was launched in 2018. Their team provides Custom Software Development and Enterprise App Modernization.
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$1,000+< $25 / hr10 - 49London, England
Services provided
Founded in 2019, Redfoot is a small mobile app development firm. Their services include Mobile App Development and Web Development.
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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 / hr250 - 999Miami, FL
Ability to deliver
36.7/40.019/20 Reviews9.9/10 Clients & Experience7.8/10 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
35.4/40.017.4/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
45% Enterprise App Modernization55% Other -
$100,000+$50 - $99 / hr1,000 - 9,999Oakland, CA
Ability to deliver
34/40.015.2/20 Reviews8.8/10 Clients & Experience10/10 Market PresenceService focus
45% Enterprise App Modernization55% Other -
$25,000+$25 - $49 / hr1,000 - 9,999Orlando, FL
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
10% Enterprise App Modernization90% 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 -
$10,000+$50 - $99 / hr1,000 - 9,999Warszawa, Poland
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 - 9,999Atlanta, GA
Ability to deliver
37.4/40.017.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
UndisclosedUndisclosed1,000 - 9,999Atlanta, GA
Ability to deliver
34.5/40.017.2/20 Reviews10/10 Clients & Experience7.3/10 Market PresenceService focus
20% Enterprise App Modernization80% 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 -
$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 -
$50,000+$150 - $199 / hr50 - 249Montréal, Canada
Ability to deliver
37.9/40.018.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$50 - $99 / hr50 - 249Rybnik, Poland
Ability to deliver
35.7/40.017.8/20 Reviews10/10 Clients & Experience7.9/10 Market PresenceService focus
30% Enterprise App Modernization70% 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 -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
37.5/40.018.4/20 Reviews10/10 Clients & Experience9.1/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$25 - $49 / hr250 - 999Stuttgart, Germany
Ability to deliver
38.4/40.018.8/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$10,000+$50 - $99 / hr50 - 249Lakewood, CO
Ability to deliver
39.4/40.019.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
10% Enterprise App Modernization90% 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 -
$1,000+< $25 / hr50 - 249Ahmedabad, India
Ability to deliver
37.3/40.018.4/20 Reviews9.6/10 Clients & Experience9.3/10 Market PresenceService focus
20% Enterprise App Modernization80% 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 -
$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
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.