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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We evaluate companies on verified profile data: services, pricing, locations, and portfolio. Client reviews are being collected. We may earn a fee for some placements. How we rank and verify

4,482 Companies

List of the Best Legacy System Modernization Agencies

Thinkogic
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We are an energetic, diverse team brought together by a shared enthusiasm for excellence and creativity. Operating in various industries, we create software solutions that bring joy to users and consistently go beyond expectations. Our methodology emphasizes user-centered experiences, seamlessly emb
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+8 Services
18% Custom Web Application Development
13% Mobile App Development (iOS & Android)
10% API Development & Integration
5% E-Commerce Development
AI Summary
“Thinkogic is a dynamic, diverse software company specializing in user-centered solutions across industries, focused on innovative technology that enhances daily life and drives meaningful impact.”
Scriptus Solutions
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**Established:** 2020 **Primary Focus:** IT Services | Software Development | Digital Transformation 💡**About Us** At Scriptus Solutions, we revolutionize how startups and enterprises utilize technology to drive growth. We are a results-oriented IT services and software development firm foun
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Surat, Gujarat, In
Services Provided+3 Services
18% Custom Web Application Development
13% Mobile App Development (iOS & Android)
10% Backend Development
7% Frontend Development
AI Summary
“Scriptus Solutions delivers innovative IT services and software development, enabling startups and enterprises to enhance digital transformation, efficiency, and growth through tailored technology solutions.”
Infotyke
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Infotyke is a technology-focused company that specializes in creating custom software, mobile applications, web solutions, and digital marketing services. We emphasize innovation and scalability to assist businesses from various sectors in leveraging technology for growth. Our areas of expertise inc
Highlights
10-49
Employees
New Delhi, Delhi, In
Services Provided+3 Services
18% Mobile App Development (iOS & Android)
20% Custom Web Application Development
7% E-Commerce Development
5% Legacy System Modernization
AI Summary
“Infotyke delivers custom software, mobile apps, web development, and digital marketing services, focusing on innovation, scalability, and enhancing business growth across diverse sectors.”
Tamooh Tech LLC
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Tamooh Tech LLC provides top-notch digital solutions for contemporary businesses. We utilize a powerful technology stack to create scalable, secure, and user-friendly platforms, offering services from tailored backend development to smooth frontend experiences. Our key areas of expertise include: Zo
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Sharjah, Ae
Services Provided+6 Services
9% Custom Web Application Development
6% Legacy System Modernization
3% E-Commerce Development
5% Mobile App Development (iOS & Android)
AI Summary
“Tamooh Tech LLC offers comprehensive digital solutions including Zoho implementation, cloud architecture, custom app development, and industrial automation, delivering scalable and secure platforms for modern businesses.”
Alloy Digital
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Alloy aims to enable bold digital growth by utilizing technologies informed by behavioral science. Our goal is to instill confidence in our clients, encouraging them to adopt innovative digital solutions that enhance their initiatives and streamline their processes. With our commitment to transparen
Highlights
10-49
Employees
Birmingham, Alabama, Us
Services Provided+12 Services
12% Custom Web Application Development
12% Mobile App Development (iOS & Android)
3% E-Commerce Development
3% Legacy System Modernization
AI Summary
“Alloy Digital delivers comprehensive digital solutions including custom software, UX/UI design, and strategic consulting, combining behavioral science expertise to drive innovative, user-centered growth.”
smartSense Consulting Solutions
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We are a product design and engineering firm based in Gandhinagar, India, utilizing cutting-edge technologies, and supported by a skilled team of over 150 professionals. Our primary areas of expertise include AI, IoT, Data Science, and Blockchain. We conduct comprehensive analyses of client needs to
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided+8 Services
8% API Development & Integration
3% Legacy System Modernization
14% Custom Web Application Development
8% Mobile App Development (iOS & Android)
AI Summary
“smartSense Consulting Solutions is an India-based product design and engineering firm specializing in AI, IoT, Data Science, and Blockchain with a skilled team of 150 professionals delivering cutting-edge technology solutions.”
Speqto Technologies Private Limited
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Speqto Technologies Pvt Ltd. is a leading global service provider in software technology and innovation. Founded in early 2017 in the NCR region of India, the company prioritizes customer satisfaction and embraces innovation. We deliver top-notch services across our areas of expertise and are recogn
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Noida, Uttar Pradesh, In
Services Provided+14 Services
5% Custom Web Application Development
4% Mobile App Development (iOS & Android)
2% E-Commerce Development
1% Legacy System Modernization
AI Summary
“Speqto Technologies Pvt Ltd is a global IT innovator specializing in Web, Mobile, AI, Blockchain, and Fintech solutions, emphasizing customer satisfaction, innovation, and global expansion.”
OpenForge
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OpenForge is the top name in Mobile App Consulting. As the premier trusted partner of the Ionic Framework in the United States and South America, our team focuses on helping businesses thrive with Mobile Applications, Progressive Web Apps, and App Store Optimization. Get in touch with us today if:
Highlights
$50,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Philadelphia, Pennsylvania, Us
Services Provided+3 Services
23% Mobile App Development (iOS & Android)
8% Progressive Web App (PWA) Development
2% Legacy System Modernization
14% UX Research & Usability Testing
AI Summary
“OpenForge specializes in mobile app consulting, offering expertise in mobile applications, progressive web apps, and app store optimization across the US and South America.”
AddWeb Solution
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AddWeb Solution is an AI-driven digital agency located in Greenville, South Carolina, offering innovative digital solutions globally. With over 24 years of experience and strong partnerships with reputable IT and digital firms, we have successfully handled numerous individual projects on an internat
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Greenville, South Carolina, Us
Services Provided+25 Services
3% Mobile App Development (iOS & Android)
2% Frontend Development
3% API Development & Integration
2% QA & Software Testing
AI Summary
“AddWeb Solution is a Greenville-based AI-driven digital agency with 24+ years experience delivering innovative, agile digital solutions worldwide, enhancing business productivity and ensuring strong ROI through expert partnerships.”
codective
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We bring groundbreaking technologies to all facets of business, serving as your navigator through the realm of advanced technologies and organizational change.
Highlights
$25,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
50-249
Employees
New York, New York, Us
Services Provided+9 Services
15% Custom Web Application Development
8% Legacy System Modernization
3% Code Review & Technical Audits
6% AI Strategy & Roadmap Consulting
AI Summary
“codective delivers tailored software development, AI-driven solutions, IT managed services, and data analytics expertise, guiding businesses through advanced technologies and transformative organizational change.”

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Top Legacy System Modernization Firms

List of the Best Legacy System Modernization Agencies

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