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

AICONIC
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We create Digital Brain platforms for our clients utilizing our distinctive expertise.
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Warszawa, Masovian, Pl
Services Provided+15 Services
4% Custom AI Chatbot Development
4% Machine Learning Model Development
3% Cloud Consulting & SI
1% Other IT Consulting and SI
AI Summary
“AICONIC develops advanced Digital Brain platforms, leveraging unique expertise to deliver innovative solutions that enhance clients' digital transformation and operational capabilities across industries.”
ZSI.AI
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ZSI.ai serves as your entry point to leveraging the capabilities of AI for your business. Our state-of-the-art solutions utilize the most recent developments in AI technology to foster innovation, improve workflows, and boost efficiency. Whether you aim to optimize your operations, elevate customer
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
New York, New York, Us
Services Provided+5 Services
10% Custom Web Application Development
4% Legacy System Modernization
11% E-Commerce Development
10% IT Staff Augmentation
AI Summary
“ZSI.ai delivers advanced AI solutions to enhance business innovation, streamline workflows, and improve customer experiences, empowering organizations to succeed in the digital era.”
Appvoir
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A comprehensive software development firm that assists startups and established companies in achieving digital transformation. Drawing on extensive experience in creating multi-tier mobility solutions, marketplace platforms, and software engineering services, we enable businesses and innovators to t
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Chandigarh, Chandigarh, In
Services Provided+10 Services
8% Custom Web Application Development
10% Mobile App Development (iOS & Android)
7% E-Commerce Development
3% Legacy System Modernization
AI Summary
“Appvoir is a software development firm specializing in digital transformation, offering multi-tier mobility solutions, marketplace platforms, and software engineering services to startups and established companies.”
LYMDATA LABS PRIVATE LIMITED
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LymData Labs offers data-focused digital transformation services, helping our clients achieve their goals through the expertise and dedication of our highly skilled and experienced professionals.
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Kochi, Kerala, In
Services Provided+7 Services
14% Mobile App Development (iOS & Android)
15% Custom Web Application Development
5% Legacy System Modernization
10% Product Design
AI Summary
“LYMDATA LABS PRIVATE LIMITED delivers comprehensive digital transformation services including software development, UX/UI design, and digital marketing to empower businesses with innovative, user-centric solutions.”
Softorica
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Softorica Limited is a comprehensive software engineering firm that focuses on cutting-edge digital solutions. We create, develop, and enhance high-performance websites, mobile applications, SaaS platforms, ERP/CRM systems, cloud infrastructure, DevOps pipelines, AI/ML solutions, e-commerce sites, a
Highlights
$5,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Lahore, Pk Punjab, Pk
Services Provided+33 Services
4% Custom Web Application Development
4% Mobile App Development (iOS & Android)
4% SaaS Product Development
3% E-Commerce Development
AI Summary
“Softorica Limited delivers comprehensive software engineering services, specializing in web, mobile, SaaS, ERP/CRM, e-commerce, AI/ML, cloud, DevOps, and blockchain solutions with emphasis on precision and security.”
Increments Inc.
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Since 2016, we have been an award-winning company specializing in custom mobile app design and development. We develop impactful iOS and Android applications that generate significant business outcomes for ambitious startups, SMEs, and large enterprises across the globe. With 157 apps created and 28
Highlights
$25,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Dhaka, Dhaka, Bd
Services Provided+5 Services
27% Mobile App Development (iOS & Android)
5% API Development & Integration
1% Legacy System Modernization
10% UX Research & Usability Testing
AI Summary
“Increments Inc. is an award-winning custom mobile app developer specializing in iOS and Android, delivering impactful, AI-driven solutions for startups to enterprises worldwide with rapid turnaround.”
Web Mriya
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We are a newly established team of Front End developers who possess a strong grasp of JavaScript and web fundamentals. With more than six years of industry experience and a commitment to maintaining close communication with clients and back-end teams, we understand the challenges faced by previous c
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+2 Services
23% Frontend Development
7% Custom Web Application Development
3% Legacy System Modernization
20% Product UX Strategy
AI Summary
“Web Mriya is a front-end development team specializing in JavaScript and web fundamentals, committed to delivering high-quality products through close client and back-end collaboration.”
Zinios Technologies
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We are a technology and creative consultancy dedicated to assisting enterprises and start-ups in their digital transformation through a collaborative approach as a design and technology partner, focusing on product and application design and development. Our stronghold lies in our proficiency with w
Highlights
$25,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Bengaluru, Karnataka, In
Services Provided+5 Services
12% Custom Web Application Development
8% Mobile App Development (iOS & Android)
7% E-Commerce Development
4% QA & Software Testing
AI Summary
“Zinios Technologies is a Bangalore-based consultancy delivering digital transformation through custom software, UX/UI design, IT staff augmentation, and emerging technologies like AI, AR/VR, and IoT.”
Tisha Tech
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Tisha Technologies is a prominent provider of mobile app and website development services, including website design, e-commerce site development, content creation, and website maintenance. Our solutions empower businesses to utilize advanced technology to achieve a lasting competitive edge in the cu
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+6 Services
30% Mobile App Development (iOS & Android)
20% Software Development Services
10% E-Commerce Development
10% Custom Web Application Development
AI Summary
“Tisha Technologies specializes in mobile app and website development, offering design, e-commerce solutions, content creation, and maintenance to help businesses achieve competitive advantages through advanced technology.”
Alphagnito Technologies Private Limited
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Alphagnito Technology is a leading web and mobile app development firm in India, focused on turning digital concepts into effective business solutions. Driven by a commitment to innovation and excellence, we assist startups, small to medium enterprises, and large organizations in creating scalable d
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Madurai, Tamil Nadu, In
Services Provided+14 Services
10% Custom Web Application Development
10% Mobile App Development (iOS & Android)
7% API Development & Integration
4% E-Commerce Development
AI Summary
“Alphagnito Technologies Private Limited delivers innovative web and mobile app development, offering scalable digital solutions with expertise in multiple frameworks to empower diverse industries' growth.”

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Top Legacy System Modernization Firms

List of the Best Legacy System Modernization Agencies

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