Top Application Modernization Services
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UndisclosedUndisclosed10 - 49
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Based in San Francisco, California and Portland, Oregon, Formant is a cloud consulting & SI company. Launched in 2017, the team provides cloud consulting & SI and Artificial Intelligence.
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UndisclosedUndisclosed10 - 49Winnipeg, Canada
Services provided
In Winnipeg, Canada, OlaTech Corporation is a software development company. They provide Custom Software Development and Application Management & Support and were launched in 2001.
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UndisclosedUndisclosed10 - 49Fredericksburg, VA
Services provided
Arete Consulting, LLC. Is a Fredericksburg, Virginia-based custom software development firm. The team offers Custom Software Development and Application Management & Support.
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UndisclosedUndisclosed10 - 49Spring, TX
Services provided
BubbleUp, LLC is a social media marketing company founded in 2004. The agency offers Social Media Marketing and Logo.
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UndisclosedUndisclosed10 - 49Ellicott City, MD
Services provided
Independent Software, Inc. Is a Cybersecurity company. Located in Ellicott City, Maryland, the agency focuses on Cybersecurity and Custom Software Development.
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UndisclosedUndisclosed10 - 49Fulton, MD
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Set of X Technology Partners is a Computer Engineering company. Launched in 2019, their team offers Computer Engineering and Custom Software Development.
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UndisclosedUndisclosed10 - 49Herndon, VA
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Delphine Technologies, a Digital Engineering company, is based in Herndon, Virginia. Their services include Digital Engineering and IT strategy consulting.
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UndisclosedUndisclosed10 - 49Seattle, WA
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Cloud consulting & SI company Marici Technology Solutions provides cloud consulting & SI and ECM consulting and SI. They are headquartered in Seattle, Washington.
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UndisclosedUndisclosed10 - 49Rockville, MD
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In Rockville, Maryland, Optimoz, Inc. Is a big data analytics company. Established in 2013, the team provides BI & big data consulting & SI and cloud consulting & SI.
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UndisclosedUndisclosed10 - 49Columbia, MD
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Mokxa Technologies, LLC is a Cybersecurity company established in 2013. Their services include Cybersecurity and UX/UI Design.
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UndisclosedUndisclosed10 - 49Lehi, UT
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Simsaw LLC is a custom software development company in Lehi, Utah and Mohali, Punjab, India. The team offers Custom Software Development and BI & big data consulting & SI.
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UndisclosedUndisclosed10 - 49
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Exceller, a small IT strategy consulting company, is in Houston, Texas. Their services include IT strategy consulting and cloud consulting & SI.
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UndisclosedUndisclosed10 - 49Kraków, Poland
Services provided
Founded in 2018, Skillberry is a software development firm. The team provides Custom Software Development and Application Testing and is in Kraków, Poland.
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UndisclosedUndisclosed10 - 49Ternopil, Ukraine
Services provided
Future Processing Ukraine is an user experience agency established in 2017. The team offers UX/UI Design and BI & big data consulting & SI.
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UndisclosedUndisclosed10 - 49Toronto, Canada
Services provided
GlobalDWS Corporation is an IT strategy consulting company. They are in Toronto, Canada and have small team. They offer IT strategy consulting and Custom Software Development.
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UndisclosedUndisclosed10 - 49San Ramon, CA
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Cidersoft is a web design company. The San Ramon, California-based team provides Web Design and UX/UI Design.
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UndisclosedUndisclosed10 - 49Glastonbury, CT
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Data Based Development Systems is a big data company. The team offers BI & big data consulting & SI and cloud consulting & SI, and the firm is based in Glastonbury, Connecticut.
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UndisclosedUndisclosedFreelancerBogotá, Colombia
Services provided
Software development company Jorge Diaz Software Developer is headquartered in Bogotá, Colombia. Their services include Custom Software Development and Enterprise App Modernization.
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$10,000+$50 - $99 / hr2 - 9
Services provided
See all 8 projectsWi4 offers comprehensive IT modernization services, including App Modernization and Legacy App Modernization. Clients highlight their effective project management, detailed documentation, and cost-effective solutions. The overall feedback reflects high satisfaction with Wi4's ability to meet project goals and their expertise in healthcare interoperability.
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$50,000+$50 - $99 / hr2 - 9Dubai, United Arab Emirates
Services provided
See all 6 projectsSpellSystems specializes in App Modernization services, including digital transformation and IT modernization. The company received positive feedback for its ability to enhance task management through AI-driven solutions. Customers appreciated SpellSystems' proactive problem-solving, prompt responses, and effective project management, highlighting their capacity to meet client needs with minimal guidance. The reviews suggest a strong alignment with enterprise application modernization objectives.
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UndisclosedUndisclosed2 - 9Lubbock, TX
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Bohn Technology Solutions is a small e-commerce development firm. They focus on E-Commerce Development and Mobile App Development and were established in 2010.
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UndisclosedUndisclosed2 - 9Amsterdam, Netherlands
Services provided
Established in 2014, LeadBoxer is a small Amsterdam, Netherlands-based IT managed services company. Their services include IT managed services and IT strategy consulting.
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UndisclosedUndisclosed2 - 9Gaithersburg, MD
Services provided
Acro Systems Inc. Is a Business Consulting company. They were launched in 2016 and specialize in Business Consulting and Custom Software Development.
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UndisclosedUndisclosed2 - 9Stamford, CT
Services provided
Columbia Consulting Group is a Market Research company. Established in 1997, the team specializes in Market Research and BI & big data consulting & SI.
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UndisclosedUndisclosed2 - 9Hauppauge, NY
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Contractor Support Services Inc. Is an IT managed services company. Located in Hauppauge, New York, the team provides IT managed services and Cybersecurity.
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UndisclosedUndisclosed2 - 9Oakton, VA
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Based in Oakton, Virginia, NeevSys Inc is a small custom software development company. The team focuses on Custom Software Development and UX/UI Design.
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UndisclosedUndisclosed2 - 9Quantico, VA
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Kriaanet Inc is a Quantico, Virginia-based Application Management & Support company. The team provides Application Management & Support and IT managed services.
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UndisclosedUndisclosed2 - 9Cupertino, CA
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Step Ahead Solutions, Inc. Is a Cybersecurity company. Launched in 2006, the company is headquartered in Cupertino, California. Their services include Cybersecurity and BI & big data consulting &
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UndisclosedUndisclosed2 - 9Odenton, MD
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End2End Technical Solutions, Inc. Is a software development company launched in 2011. The company specializes in Custom Software Development and Cybersecurity, and is small.
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UndisclosedUndisclosed2 - 9Nottingham, England
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Launched in 2008, Webxcell Digital is a small software development firm headquartered in Nottingham, England. Their team focuses on Custom Software Development and AR/VR development.
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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+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
36.7/40.017.6/20 Reviews10/10 Clients & Experience9.1/10 Market PresenceService focus
20% Enterprise App Modernization80% 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
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.