Top Legacy System Modernization Firms

Many core systems still run on COBOL, Visual Basic, old .NET or Java monoliths that few engineers can maintain and that cannot connect to modern tools. Legacy system modernization companies replace or rework them without stopping the business: they assess the codebase, choose between rehosting, refactoring, rearchitecting and rebuilding, then migrate data and users in stages. Companies hire them when vendors end support, when the last developer who knows the system is retiring, when security audits flag unsupported software, or when a new product needs APIs the old system cannot offer.

Compare the firms here on modernizations of your specific technology and on how they keep the old and new systems running side by side during the switch.

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4,482 Companies

List of the Best Legacy System Modernization Agencies

Devapo
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Devapo - Smart Process Automation | Tailored Software Development | Project Outsourcing | Legacy System Modernization | Product Design We incorporate both business and IT perspectives into each project, crafting strategic solutions that provide clients with a competitive edge. Share your challenges
Highlights
$25,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Warszawa, Masovian, Pl
Services Provided+5 Services
3% BI & Big Data Consulting & SI
5% Cloud Consulting & SI
3% ERP Consulting and SI
2% ECM Consulting and SI
AI Summary
“Devapo delivers tailored software development, smart automation, and legacy modernization, combining IT and business insights to enhance client operations and competitive advantage.”
CodeInno
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CodeInno is a software engineering company that provides tailored technological solutions. Since its establishment in 2011, our lab has been instrumental in the success of both established enterprises and emerging startups through development and consulting services. We possess expertise in various
Highlights
$25,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Yerevan, Am
Services Provided
80% Custom Web Application Development
20% Legacy System Modernization
AI Summary
“CodeInno is a software engineering firm providing tailored digital solutions and consulting across industries, leveraging diverse technologies and deep expertise to support and enhance business growth.”
Techpearl Software Pvt Ltd.
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Since 2013, Techpearl has been dedicated to helping customers achieve their visions. We take great pride in our work, utilizing the best practices and technologies available in the industry. Our clientele includes startups, entrepreneurs, and established companies. With extensive experience in digit
Highlights
$25,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Bengaluru, Karnataka, In
Services Provided+1 Services
30% Custom Web Application Development
20% Mobile App Development (iOS & Android)
10% Blockchain & Web3 Development
15% E-Commerce Development
AI Summary
“Techpearl Software Pvt Ltd. delivers innovative, customized software solutions since 2013, enabling startups and enterprises worldwide to achieve digital transformation and automate business processes effectively.”
Clurgo
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Skilled IT professionals dedicated to enhancing business performance through efficient IT solutions comprise Clurgo, a worldwide software development and IT outsourcing firm. We create, develop, and implement tailored software solutions for businesses aiming to leverage technology for significant im
Highlights
$25,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Warszawa, Masovian, Pl
Services Provided
20% Legacy System Modernization
30% Custom Web Application Development
50% IT Compliance & Governance
AI Summary
“Clurgo is a global software development and IT outsourcing firm specializing in tailored Java-based solutions to enhance business performance, supported by a skilled team of over 100 experts.”
INDOT Software Solutions
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INDOT Software Solutions is a specialized consulting firm that focuses on updating legacy and essential systems. We assist organizations in moving from outdated architectures to scalable, secure, and compliant platforms, concentrating on enterprise Java ecosystems, cloud infrastructures, and regulat
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Alimos, Gr
Services Provided
20% Custom Web Application Development
30% Legacy System Modernization
30% Cloud Consulting & SI
20% Other IT Consulting and SI
AI Summary
“INDOT Software Solutions specializes in modernizing legacy systems through secure, scalable, and compliant enterprise Java and cloud solutions, ensuring long-term reliability for critical business projects.”
Kreep Engineering
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Founded in 2018, Kreep Engineering is a software development outsourcing firm located in Frankfurt, Germany. With a team of more than 1,000 talented developers, the company focuses on providing top-notch software solutions customized to meet the unique requirements of its clients. Their offerings co
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+1 Services
20% AI Strategy & Roadmap Consulting
20% Machine Learning Model Development
10% Computer Vision Solutions
35% Legacy System Modernization
AI Summary
“Kreep Engineering, established in 2018 in Frankfurt, offers tailored software development and modernization services across diverse industries, leveraging a skilled team of over 1,000 developers.”
Augmentum, Inc.
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Augmentum develops products, provides consulting, and delivers software services aimed at enterprise digital transformation. Since our establishment in 2003, we have collaborated with top-tier clients to implement human-centered approaches and cutting-edge technologies, resulting in award-winning di
Highlights
1000-9999
Employees
San Mateo, California, Us
Services Provided
80% Custom Web Application Development
20% Legacy System Modernization
AI Summary
“Augmentum, Inc. specializes in enterprise digital transformation, offering innovative consulting, software services, and human-centered solutions to enhance engagement for customers, employees, and partners since 2003.”
Flow Custom Software
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Flow is a dedicated software development consultancy that specializes in creating customized business software and ERP systems for expanding Australian businesses. We collaborate with our clients to support their long-term growth and have a proven method for thoroughly understanding their needs to d
Highlights
$5,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
2-9
Employees
Buderim, Queensland, Au
Services Provided
80% Custom Web Application Development
20% Legacy System Modernization
AI Summary
“Flow Custom Software specializes in designing tailored business software and ERP solutions for Australian companies, enhancing operational efficiency, growth, and user productivity through expert development and modernization.”
Forgeahead Solutions Inc.
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Forgeahead is an Advanced Tier AWS Partner that helps enterprises design, modernize, and manage scalable digital platforms. With over 23 years of expertise, the company collaborates with organizations dealing with intricate technology landscapes to enhance system reliability, security, and operation
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Mountain View, California, Us
Services Provided+9 Services
15% Custom Web Application Development
5% Mobile App Development (iOS & Android)
30% Legacy System Modernization
10% Generative AI
AI Summary
“Forgeahead Solutions Inc. is an Advanced Tier AWS Partner specializing in cloud engineering, DevOps, and AI-driven modernization to enhance enterprise platform scalability, security, and operational efficiency.”
Stratum PR
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Stratum PR is a consulting firm specializing in AI and Data Analytics, catering to both businesses and government entities throughout Puerto Rico. We convert intricate data challenges into actionable insights by offering tailored business intelligence solutions, automated workflows, and comprehensiv
Highlights
$1,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
2-9
Employees
Trujillo Alto, Pr
Services Provided+6 Services
7% AI Strategy & Roadmap Consulting
3% Custom AI Chatbot Development
8% Workflow Automation (Zapier / Make / n8n)
7% Cloud Consulting & SI
AI Summary
“Stratum PR is a Puerto Rico-based consulting firm specializing in AI, data analytics, and workflow automation, delivering tailored business intelligence and secure enterprise solutions to public and private sectors.”

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Top Legacy System Modernization Firms

List of the Best Legacy System Modernization Agencies

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