Top Application Modernization Services
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UndisclosedUndisclosed10 - 49High Wycombe, England
Services provided
Cirronex is a small High Wycombe, England-based Application Testing company. Their services include Application Testing and Application Management & Support.
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$1,000+$25 - $49 / hr10 - 49
Services provided
UX design company ATMEZ AI Solutions Pvt. Ltd. Was established in 2025. The small team offers UX/UI Design and cloud consulting & SI.
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$10,000+$25 - $49 / hr10 - 49
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Launched in 2021, Deep Vision is an IT strategy consulting company. Their team focuses on IT strategy consulting and ERP consulting and SI.
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$5,000+$25 - $49 / hr10 - 49
Services provided
Bitviraj Technology is a small Pune, India-based graphic design company. The team provides Graphic Design and Blockchain.
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$1,000+$25 - $49 / hr10 - 49
Services provided
Illoren is an user experience design agency. They offer UX/UI Design and Custom Software Development and were launched in 2024.
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$10,000+$50 - $99 / hr10 - 49
Services provided
DevoraOne is a custom software development company launched in 2022. Their services include Custom Software Development and E-Commerce Development.
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UndisclosedUndisclosed10 - 49
Services provided
VRNeXGen is a cloud consulting & SI company. They are based in Chennai, India. Their team specializes in cloud consulting & SI and IT managed services.
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$25,000+$150 - $199 / hr10 - 49
Services provided
Elevate Labs, a custom software development firm, was established in 2019. The team offers Custom Software Development and Mobile App Development and is in Lagos, Nigeria and Austin, Texas.
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$10,000+$150 - $199 / hr50 - 249Chennai, India
Services provided
See all 1 projectsSunSmart, an ISO 9001:2015 Certified Multi-National Software Corporation incorporated in 2004. SunSmart is headquartered in Silicon Valley, USA, and has offices in UK, Europe, Middle East, India,
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UndisclosedUndisclosed50 - 249Mumbai, India
Services provided
Pegasus InfoCorp is an Enterprise App Modernization company. The Mumbai, India-based firm offers Enterprise App Modernization and UX/UI Design.
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$10,000+Undisclosed50 - 249
Services provided
Software development company Paragyte Technology was launched in 2007. The agency specializes in Custom Software Development and Enterprise App Modernization.
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$25,000+$25 - $49 / hr50 - 249Cairo, Egypt
Services provided
Sumerge is an ECM consulting and SI company. They offer ECM consulting and SI and Custom Software Development and were founded in 2005. The company is based in Cairo, Egypt and Boston,
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UndisclosedUndisclosed50 - 249Beavercreek, OH
Services provided
Midsize IT strategy consulting company The Greentree Group, is headquartered in Beavercreek, Ohio. The team offers IT strategy consulting and Cybersecurity.
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$1,000+$25 - $49 / hr50 - 249Chennai, India
Services provided
Vriksha Techno SOlutions, a software development company, is headquartered in Chennai, India. Their services include Custom Software Development and E-Commerce Development.
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UndisclosedUndisclosed50 - 249
Services provided
Concert Care LLC is an application development company. The Birmingham, Alabama-based company provides Mobile App Development and Web Design.
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$1,000+< $25 / hr50 - 249Pune, India
Services provided
Founded in 2003, Fidel Softech Pvt Ltd is an IT staff augmentation company. The team offers IT staff augmentation and Translation.
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$5,000+< $25 / hr50 - 249Ahmedabad, India
Services provided
Cypherox Technologies Pvt. Ltd. Is a midsize software development firm based in Ahmedabad, India and Rajkot, India. The team focuses on Custom Software Development and Enterprise App Modernization.
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$5,000+$25 - $49 / hr50 - 249
Services provided
SolutionIT is an IT staff augmentation company established in 2007. Their services include IT staff augmentation and IT strategy consulting.
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$5,000+$100 - $149 / hr50 - 249Westmont, IL
Services provided
RSTAR Technologies is a CRM consulting and SI company. The Westmont, Illinois-based agency was launched in 2000. Their team provides CRM consulting and SI and ERP consulting and SI.
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UndisclosedUndisclosed50 - 249Giza Governorate, Egypt
Services provided
Established in 2003, asgatech is a custom software development firm. The team specializes in Custom Software Development and Web Development.
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$5,000+$50 - $99 / hr50 - 249Warszawa, Poland
Services provided
MCX Group is a software development firm. The agency is headquartered in Warszawa, Poland. Their team offers Custom Software Development and cloud consulting & SI.
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$10,000+Undisclosed50 - 249Gurugram, India
Services provided
Tooliqa is an IT strategy consulting company. They were founded in 2021 and provide IT strategy consulting and BI & big data consulting & SI.
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Undisclosed$25 - $49 / hr50 - 249Rajkot, India
Services provided
Founded in 2014, Softhealer Technologies Pvt. Ltd. Is an ERP consulting and SI company. The midsize team offers ERP consulting and SI and Custom Software Development.
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$1,000+< $25 / hr10 - 49Ahmedabad, India
Services provided
BirajTech, a custom software development firm, is located in Ahmedabad, India and California, California. They specialize in Custom Software Development and Mobile App Development.
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$10,000+$100 - $149 / hr2 - 9Douglas, Isle of Man
Services provided
App development firm Fuzzelogic Solutions was established in 2007. Headquartered in Douglas, Isle of Man, the team offers Mobile App Development and Custom Software Development.
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$10,000+$150 - $199 / hr2 - 9South Cave, England
Services provided
Launched in 2021, Tweave.Tech is a small custom software development company. Their services include Custom Software Development and Business Consulting.
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UndisclosedUndisclosed2 - 9Sakiet Eddaier, Tunisia
Services provided
SAC Marquage is a small Enterprise App Modernization company established in 2016. Their services include Enterprise App Modernization and Contract Manufacturing.
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$100,000+$150 - $199 / hr10 - 49Toronto, Canada
Services provided
See all 2 projectsBuild With Assembly offers services in cloud assessments, migrations, and digital transformation, with a focus on Application Modernization. Reviews highlight their strong technical skills, agile approach, and alignment with customer needs, establishing them as trusted partners. Their professional project management and customer-centricity are consistently praised, helping to drive significant Azure Consumed Revenue growth and customer satisfaction.
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Undisclosed$100 - $149 / hr10 - 49
Services provided
Refractiv Limited is a small unified communications consulting & SI company. They specialize in unified communications consulting & SI and Web Design and were established in 2002.
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$5,000+$50 - $99 / hr10 - 49Bracknell, England
Services provided
Ancoris is a cloud consulting & SI company. Their team is headquartered in Bracknell, England and offers cloud consulting & SI and Application Management & Support.
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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.