Top Application Modernization Services
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$10,000+$100 - $149 / hr50 - 249Birmingham, AL
Services provided
Founded in 2022, ConcertIDC is a custom software development firm. In Birmingham, Alabama and Chennai, India, the team focuses on Custom Software Development and Application Management & Support.
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UndisclosedUndisclosed10 - 49
Services provided
See all 1 projectsInline Manual is a company specializing in automated user onboarding and adoption services. The overall feedback from reviews is positive, highlighting the ease of implementation and feature-rich platform as key strengths. Approximately 90% of the reviews emphasize their excellent onboarding process, while only a minor critique mentions the rudimentary nature of some knowledge base articles.
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$250,000+$100 - $149 / hr1,000 - 9,999Santa Clara, CA
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Infostretch is a large Application Testing company headquartered in Santa Clara, California and New York, New York. Their services include Application Testing and Enterprise App Modernization.
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$1,000+$25 - $49 / hr2 - 9Dublin, Ireland
Services provided
CodeNotion Limited, a website development company, was launched in 2022. Located in Dublin, Ireland and Nicosia, Cyprus, the team offers Web Development and Enterprise App Modernization.
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$25,000+$50 - $99 / hr50 - 249Northampton, MA
Services provided
ILSA Interactive is an UX design agency launched in 2009. Their services include UX/UI Design and Custom Software Development.
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$50,000+$50 - $99 / hr50 - 249Rehovot, Israel
Services provided
Globalbit is a custom software development company. The company is located in Rehovot, Israel and London, England. Their team offers Custom Software Development and Mobile App Development.
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$1,000+$25 - $49 / hr50 - 249Sahibzada Ajit Singh Nagar, India
Services provided
AR/VR development company Kompanions is headquartered in Gurugram, India and Sahibzada Ajit Singh Nagar, India. They offer AR/VR development and Artificial Intelligence and were established in 2015.
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$25,000+$50 - $99 / hr1,000 - 9,999
Services provided
Founded in 2000, NEORIS, a large software development company, is located in Miami, Florida. Their services include Custom Software Development and Application Testing.
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$75,000+$50 - $99 / hr250 - 999Ciudad de México, Mexico
Services provided
In Ciudad de México, Mexico and Paris, France, PALO IT is a midsize custom software development company. Their services include Custom Software Development and Product Design.
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$25,000+$50 - $99 / hr10 - 49Ha Noi, Vietnam
Services provided
TRIPLAYZ, a mobile application development company, was established in 2017. The team specializes in Mobile App Development and Web Development.
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$50,000+$150 - $199 / hr10 - 49București, Romania
Services provided
Crowd Favorite is a small Digital Strategy company located in Atlanta, Georgia and Los Angeles, California. Their services include Digital Strategy and Web Development.
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$50,000+$25 - $49 / hr50 - 249's-Graveland, Netherlands
Services provided
See all 2 projectsOmegaLab offers custom software development and IT consulting services, specializing in product discovery, MVP development, and roadmap creation. Reviews highlight the company's strong communication, adaptability, and cultural fit, with projects consistently delivered on time and within budget. Clients commend OmegaLab for its expertise and willingness to exceed expectations at competitive pricing.
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$50,000+$100 - $149 / hr10 - 49Chesterbrook, PA
Services provided
Amalgam, a custom software development firm, was established in 2012. In Chesterbrook, Pennsylvania, the team offers Custom Software Development and UX/UI Design.
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$50,000+$25 - $49 / hr50 - 249Thiruvananthapuram, India
Services provided
Travanleo Info Solutions India Pvt. Ltd. Is a New Port Richey, Florida-based software development firm. The team offers Custom Software Development and Enterprise App Modernization.
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$10,000+$100 - $149 / hr10 - 49Parsippany-Troy Hills, NJ
Services provided
Software development firm INVASSO LLC focuses on Custom Software Development and Mobile App Development. They were founded in 2017.
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Undisclosed< $25 / hr2 - 9
Services provided
See all 3 projectsEco Software Solutions LLC is a software development company specializing in custom solutions. Reviews are mixed, with 50% negative feedback highlighting scam allegations and misrepresentation, while 50% praise their timely delivery, responsive support, and cost-effective services.
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Undisclosed< $25 / hr50 - 249Kolkata, India
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Software development firm Web Spiders (India) Pvt. Ltd. Was established in 2000. The midsize team offers Custom Software Development and Social Media Marketing.
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$50,000+$50 - $99 / hr10 - 49
Services provided
ITNNOVATION is a small software development company. They offer Custom Software Development and IT staff augmentation and were founded in 2010.
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$10,000+$50 - $99 / hr50 - 249
Services provided
See all 3 projectsAltarey specializes in web application development, performance optimization, and project management, particularly utilizing technologies like React and Node.js. Reviews consistently highlight the company’s ability to meet deadlines, deliver high-quality work, and effectively communicate with clients. Clients noted Altarey's seamless collaboration, innovative solutions, and skilled low-cost developers as key strengths.
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$5,000+$25 - $49 / hr10 - 49St. Petersburg, FL
Services provided
Techstack Digital is an Enterprise App Modernization company launched in 2019. The small team focuses on Enterprise App Modernization and Custom Software Development.
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$25,000+$100 - $149 / hr10 - 49Castle Rock, CO
Services provided
BlueRival Software, a custom software development firm, was launched in 2012. The team focuses on Custom Software Development and IT strategy consulting and is headquartered in Castle Rock,
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$10,000+$300+ / hr10 - 49San Mateo, CA
Services provided
Established in 2009, On Demand One, Inc. Is a small Enterprise App Modernization company. Their team focuses on Enterprise App Modernization.
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$25,000+$50 - $99 / hr10 - 49Randburg, South Africa
Services provided
ExoSystems, a software development company, was established in 2012. The firm focuses on Custom Software Development and Mobile App Development.
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$10,000+$50 - $99 / hr50 - 249
Services provided
Symphonize is an Enterprise App Modernization company launched in 2012. The midsize team provides Enterprise App Modernization and Custom Software Development.
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UndisclosedUndisclosed50 - 249Newton, MA
Services provided
Cleartelligence is an IT strategy consulting company. They offer IT strategy consulting and BI & big data consulting & SI and are located in Newton, Massachusetts.
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$5,000+$100 - $149 / hr50 - 249Calgary, Canada
Services provided
Founded in 2005, Poeta Digital is a cloud consulting & SI company. The team specializes in cloud consulting & SI and Digital Strategy and is located in Calgary, Canada.
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$10,000+$25 - $49 / hr50 - 249Noida, India
Services provided
Aeroqube Inc. Is a Vancouver, Canada-based software development company. Their services include Custom Software Development and Web Development.
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Undisclosed$25 - $49 / hr50 - 249Seattle, WA
Services provided
NTSprint LLC is a software development company. They are located in Seattle, Washington and have midsize team of experts. Their services include Custom Software Development and Web Development.
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$5,000+Undisclosed50 - 249Bengaluru, India
Services provided
Whatfix is a Bengaluru, India-based Enterprise App Modernization company. They focus on Enterprise App Modernization and were launched in 2013.
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UndisclosedUndisclosed1,000 - 9,999London, England
Services provided
Endava is a software development firm. Their large team is in London, England and Atlanta, Georgia. Their services include Custom Software Development and IT strategy consulting.
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List of the Top 15 Legacy Modernization Services
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$50,000+$50 - $99 / hr250 - 999Miami, FL
Ability to deliver
36.9/40.019.2/20 Reviews9.9/10 Clients & Experience7.8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$5,000+< $25 / hr1,000 - 9,999San Jose, CA
Ability to deliver
35.9/40.016.6/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Kraków, Poland
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$50 - $99 / hr250 - 999Wrocław, Poland
Ability to deliver
35.4/40.015.8/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
40% Enterprise App Modernization60% Other -
$25,000+$50 - $99 / hr50 - 249Miami, FL
Ability to deliver
35.2/40.017.2/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
45% Enterprise App Modernization55% Other -
$25,000+$25 - $49 / hr1,000 - 9,999Orlando, FL
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$100,000+$50 - $99 / hr1,000 - 9,999Oakland, CA
Ability to deliver
34/40.015.2/20 Reviews8.8/10 Clients & Experience10/10 Market PresenceService focus
45% Enterprise App Modernization55% Other -
$10,000+$100 - $149 / hr250 - 999London, England
Ability to deliver
37.8/40.018.6/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Atlanta, GA
Ability to deliver
37.4/40.017.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$50 - $99 / hr1,000 - 9,999L'viv, Ukraine
Ability to deliver
38.8/40.019/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
11% Enterprise App Modernization89% Other -
$50,000+$150 - $199 / hr50 - 249Conshohocken, PA
Ability to deliver
36.4/40.016.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$100,000+$150 - $199 / hr50 - 249Southborough, MA
Ability to deliver
32.2/40.015.8/20 Reviews10/10 Clients & Experience6.4/10 Market PresenceService focus
50% Enterprise App Modernization50% Other -
UndisclosedUndisclosed1,000 - 9,999Atlanta, GA
Ability to deliver
34.1/40.016.8/20 Reviews10/10 Clients & Experience7.3/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
38/40.018.4/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$25 - $49 / hr250 - 999Frisco, TX
Ability to deliver
37.1/40.017.2/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$50,000+$150 - $199 / hr50 - 249Montréal, Canada
Ability to deliver
37.5/40.017.8/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
35.3/40.016.8/20 Reviews10/10 Clients & Experience8.6/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$10,000+$25 - $49 / hr50 - 249Portland, OR
Ability to deliver
35.3/40.017/20 Reviews10/10 Clients & Experience8.3/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$50,000+$50 - $99 / hr250 - 999Unterschleißheim, Germany
Ability to deliver
35.1/40.018/20 Reviews10/10 Clients & Experience7.1/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$50 - $99 / hr50 - 249Rybnik, Poland
Ability to deliver
35.1/40.017.2/20 Reviews10/10 Clients & Experience7.9/10 Market PresenceService focus
30% Enterprise App Modernization70% Other -
$10,000+$25 - $49 / hr250 - 999Stuttgart, Germany
Ability to deliver
37.9/40.018.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$50,000+$100 - $149 / hr50 - 249Belfast, Northern Ireland
Ability to deliver
36.9/40.017.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$5,000+< $25 / hr50 - 249Ahmedabad, India
Ability to deliver
36.9/40.018/20 Reviews9.6/10 Clients & Experience9.3/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$100,000+$25 - $49 / hr50 - 249Melbourne, Australia
Ability to deliver
32.9/40.016.4/20 Reviews8.4/10 Clients & Experience8.1/10 Market PresenceService focus
40% Enterprise App Modernization60% Other -
$50,000+$50 - $99 / hr250 - 999Palo Alto, CA
Ability to deliver
36.3/40.016.6/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
15% Enterprise App Modernization85% Other -
$25,000+$50 - $99 / hr50 - 249Kraków, Poland
Ability to deliver
36.7/40.017/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$25,000+$50 - $99 / hr250 - 999Warszawa, Poland
Ability to deliver
34.6/40.016/20 Reviews10/10 Clients & Experience8.6/10 Market PresenceService focus
20% Enterprise App Modernization80% Other -
$250,000+$50 - $99 / hr250 - 999Broomfield, CO
Ability to deliver
37.5/40.017.6/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$25,000+$50 - $99 / hr50 - 249Prague, Czech Republic
Ability to deliver
38.5/40.019.4/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
10% Enterprise App Modernization90% Other -
$5,000+$50 - $99 / hr10 - 49Brno, Czech Republic
Ability to deliver
30.4/40.017.4/20 Reviews8.2/10 Clients & Experience4.8/10 Market PresenceService focus
60% Enterprise App Modernization40% Other
Top App Modernization Agencies
App modernization companies upgrade, refactor, or re-platform legacy software so it performs like a modern, cloud-ready application. They begin by auditing the existing codebase, infrastructure, and business requirements, then create a roadmap that might include re-architecting monolithic apps into microservices, containerizing workloads, or migrating databases to scalable cloud environments. Their end goal is to improve performance, security, and maintainability while minimizing downtime.
Most firms deliver a mix of strategic and technical services, such as:
- Legacy code assessment and technical debt analysis
- Re-platforming (e.g., on-prem to AWS, Azure, or GCP)
- Code refactoring and re-architecting into microservices
- API enablement and containerization (Docker, Kubernetes)
- UI/UX refresh and mobile optimization
- Data migration, cleansing, and database modernization
- Ongoing maintenance, DevOps, and cloud cost optimization
Pricing varies widely depending on project scope, complexity, and the tech stack involved. Clutch data shows most engagements range from $50,000 to $500,000 overall, with hourly rates between $75 and $200. Lighter projects like a UI facelift or limited refactoring tend to fall near the lower end, while full re-architectures involving cloud migration, data overhaul, and strict compliance can exceed $1 million. Always request a detailed proposal that outlines costs for discovery, development, testing, and support.
When choosing the best right app modernization for your business, consider these:
- Review expertise: Look for case studies that mirror your tech stack (Java, .NET, PHP) and industry compliance needs.
- Check client feedback: Verified Clutch reviews reveal how the team communicates, hits deadlines, and handles setbacks.
- Evaluate methodology: A strong partner will propose a phased approach that includes assessment, pilot, and rollout stages, each with clear success metrics.
- Validate certifications: Cloud partnerships (AWS, Microsoft, Google) signal deep platform knowledge.
- Assess cultural fit: Long projects require easy communication, mutual trust, and shared time zones or overlap.
These are some of the red flags that you should watch for when hiring an app modernization company:
- Guaranteed timelines before an audit: Accurate estimates require a code and infrastructure review.
- Lack of documentation: If they won’t commit to architecture diagrams, test plans, or knowledge transfer, future maintenance may suffer.
- One-size-fits-all solutions: Forcing every project onto a single cloud or framework can indicate limited expertise.
- Poor security practices: Outdated OWASP knowledge or no DevSecOps pipeline is a deal-breaker for critical systems.
- Minimal client references: A reputable firm should readily provide recent, relevant references.
Here are some questions you can ask app modernization companies before hiring them:
- Which modernization strategies (rehost, refactor, re-architect) do you recommend for our stack, and why?
- Can you share success metrics from similar projects—e.g., performance gains or cost reductions?
- What is your approach to minimizing downtime during migration?
- How will you ensure code quality and security (tooling, peer reviews, automated testing)?
- What support and knowledge-transfer do you provide after launch?
- How do you handle scope changes and unforeseen legacy issues?
Partnering with specialists accelerates time-to-value. Experienced teams bring proven frameworks, automation toolchains, and cloud partnerships that help reduce risk and shorten migration windows. Businesses often benefit from faster performance, lower maintenance costs, improved security compliance, and easier feature releases, all without overburdening internal teams.
A freelancer may handle small refactoring tasks cost-effectively but often lacks the resources for large-scale audits, DevOps, and 24/7 support. Agencies provide multidisciplinary teams including architects, developers, QA specialists, DevOps engineers, and project managers who can deliver end-to-end transformations with enterprise-grade SLAs.