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

Webethics
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At Webethics Solutions, we collaborate with startups and expanding businesses to convert ideas into effective digital solutions. Whether you're testing your MVP, developing a comprehensive SaaS platform, incorporating AI/ML, or launching a feature-rich eCommerce site, we are your end-to-end developm
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Sahibzada Ajit Singh Nagar, Punjab, In
Services Provided+10 Services
10% Custom Web Application Development
8% Mobile App Development (iOS & Android)
7% SaaS Product Development
5% E-Commerce Development
AI Summary
“Webethics delivers secure, scalable digital solutions across software development, AI integration, and UI/UX design, serving startups and enterprises with custom web and mobile applications.”
Fastcurve Services
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Fastcurve's method for developing custom software solutions and offering consultancy focuses on quick delivery, a process-driven strategy, and high quality. These factors collectively help lower costs. Additionally, we streamline communication and development by minimizing hierarchical structures. O
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Bengaluru, Karnataka, In
Services Provided+6 Services
5% E-Commerce Development
10% Custom Web Application Development
8% Mobile App Development (iOS & Android)
3% Legacy System Modernization
AI Summary
“Fastcurve Services delivers custom software and consultancy with a process-driven, quality-focused approach that reduces costs, streamlines communication, and leverages expert insights across diverse fields.”
iExcel Technologies
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Welcome to iExcel: Your Business Consulting, Software Development, and Training Ally. We help businesses achieve operational excellence and undergo digital transformation by offering consulting services centered on strategy, technology integration, and change management. Our all-encompassing solutio
Highlights
$10,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
50-249
Employees
Hong Kong, Hk
Services Provided+6 Services
3% Blockchain & Web3 Development
7% Mobile App Development (iOS & Android)
5% Legacy System Modernization
5% QA & Software Testing
AI Summary
“iExcel Technologies offers comprehensive consulting, software development, and training services, enabling businesses across diverse industries to achieve operational excellence and digital transformation.”
TechsBiz IT
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TechsBiz IT: Global Leaders in Innovative Digital Solutions. TechsBiz IT is a leading international IT services and consulting firm focused on empowering businesses through advanced digital innovation. With a strategic presence in Jaipur (India), Dubai (UAE), and London (UK), we are a reliable partn
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+7 Services
6% Legacy System Modernization
8% Mobile App Development (iOS & Android)
11% Custom Web Application Development
5% AI Agent & Multi-Agent System Development
AI Summary
“TechsBiz IT is a global IT consulting firm delivering innovative, secure digital solutions aligned with client missions, leveraging international expertise to drive business growth and future readiness.”
Vortex Software Solutions
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At Vortex Solutions, we provide value to our clients through a skilled team of preselected developers who can integrate with your existing team or build a new one from scratch. We utilize Agile Programming practices, delivering working prototypes to clients at regular intervals for ongoing adjustmen
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided
15% Mobile App Development (iOS & Android)
30% Custom Web Application Development
5% Legacy System Modernization
50% IT Staff Augmentation
AI Summary
“Vortex Solutions specializes in Agile software development, offering skilled developers who integrate seamlessly with teams and ensure transparent, iterative delivery throughout the SDLC.”
Poorn Swachalit Technologies
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At PST, we are dedicated to delivering innovative IT solutions to companies around the globe. We focus on advanced technologies such as AI, machine learning, automation, and robotics, and take pride in being at the forefront of these developments. Our team of specialists continually seeks out new op
Highlights
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided+3 Services
25% Mobile App Development (iOS & Android)
15% E-Commerce Development
10% Legacy System Modernization
20% Machine Learning Model Development
AI Summary
“Poorn Swachalit Technologies delivers innovative IT solutions worldwide, specializing in AI, machine learning, automation, and robotics to advance technological capabilities.”
Worklab.io, Inc.
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Why choose Worklab? Whether it's last-minute bug fixes, web design, email templates, complete rewrites, or new builds, we take care of the challenges so you and your team can focus on your company's priorities. Still on the lookout for the perfect business tools? They might just not be available...
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Burbank, California, Us
Services Provided+5 Services
28% Custom Web Application Development
15% Mobile App Development (iOS & Android)
5% E-Commerce Development
3% Legacy System Modernization
AI Summary
“Worklab.io, Inc. provides flexible web development and design solutions, handling diverse challenges from bug fixes to full builds, enabling clients to focus on core business priorities.”
Veriday
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Veriday is a recognized, innovative company specializing in digital services, consulting, and application development. It excels in enhancing digital experiences to achieve remarkable results for both clients and employees.
Highlights
50-249
Employees
Mississauga, Ontario, Ca
Services Provided+11 Services
8% Custom Web Application Development
3% E-Commerce Development
5% Backend Development
5% Frontend Development
AI Summary
“Veriday is an innovative digital services firm specializing in consulting and application development, enhancing digital experiences to deliver exceptional results for clients and employees.”
HAZE MEDIA IT
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At Haze Media IT, we specialize in website design and development, mobile app development, web portals, SEO, SMO, digital advertising, and social media campaigns. Our clientele primarily spans India, Australia, the US, New Zealand, and some Gulf nations. We have teams in both India and Australia, co
Highlights
$75,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Gurugram, Haryana, In
Services Provided+4 Services
18% Custom Web Application Development
18% Mobile App Development (iOS & Android)
8% E-Commerce Development
2% Blockchain & Web3 Development
AI Summary
“Haze Media IT delivers comprehensive digital solutions including web and mobile development, SEO, SMO, and advertising, serving clients across India, Australia, US, New Zealand, and Gulf regions.”
Infoicon Technologies Pvt Ltd
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Infoicon Technologies is a leading force in the global IT industry, assisting over 10,000 clients from countries such as the U.S., Australia, Canada, Switzerland, Germany, France, Denmark, the Netherlands, Spain, Sweden, the United Kingdom, the Middle East, Africa, and Ireland in their digital trans
Highlights
$10,000+
Min Project Size
< $25/hr
Avg Hourly Rate
250-999
Employees
Services Provided+4 Services
8% Legacy System Modernization
23% Custom Web Application Development
10% E-Commerce Development
10% Mobile App Development (iOS & Android)
AI Summary
“Infoicon Technologies Pvt Ltd is a global IT leader with 15+ years’ experience, delivering innovative digital transformation solutions to over 10,000 clients across diverse industries worldwide.”

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Top Legacy System Modernization Firms

List of the Best Legacy System Modernization Agencies

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