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

Dragonfly Labs
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Dragonfly Labs is a remote-first company dedicated to developing scalable and impactful solutions for the future. Our remarkable team delivers top-notch development services across a variety of platforms and technologies. We specialize in areas such as HTML5, PHP, JavaScript, Angular, Ionic, Node.js
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Kolkata, West Bengal, In
Services Provided+1 Services
20% Mobile App Development (iOS & Android)
25% Custom Web Application Development
5% Legacy System Modernization
30% Machine Learning Model Development
AI Summary
“Dragonfly Labs is a remote-first company offering expert development services across multiple platforms and technologies, including web, mobile, and CRM solutions, ensuring quality and client satisfaction.”
Web Corporation Limited
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We are an Information Technology firm that focuses on providing affordable information management systems. Our aim is to deliver impactful solutions tailored to meet the specific needs of each project. Our expertise spans a variety of fields, including:
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Dar es Salaam, Tz
Services Provided+2 Services
5% Legacy System Modernization
25% Custom Web Application Development
15% Mobile App Development (iOS & Android)
5% E-Commerce Development
AI Summary
“Web Corporation Limited is an IT firm specializing in affordable, tailored information management systems, delivering impactful solutions across diverse projects to meet specific client needs.”
Digital Flask Ay
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We assist businesses in expanding, generating leads, and connecting with audiences by addressing digital experience issues. From digital marketing to web application design and development, we provide comprehensive solutions that achieve tangible outcomes.
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided+3 Services
8% Legacy System Modernization
18% Custom Web Application Development
12% CRM Consulting and SI
12% Cloud Consulting & SI
AI Summary
“Digital Flask Ay offers comprehensive digital solutions, enhancing business growth through digital marketing, web design, and application development, effectively improving digital experiences and audience engagement.”
Unaire Sync IT Solutions Pvt. Ltd.
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Welcome to Unaire Sync IT, where innovation and creativity converge in the vibrant city of Ajmer, Rajasthan, India. We are more than just an IT company; we serve as your digital dream team, dedicated to crafting tailored solutions that bring your ideas to fruition. Whether you require advanced softw
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+4 Services
10% API Development & Integration
15% Custom Web Application Development
10% Mobile App Development (iOS & Android)
8% E-Commerce Development
AI Summary
“Unaire Sync IT Solutions Pvt. Ltd. in Ajmer offers tailored IT services including software development, web and app design, CRM integration, digital marketing, and creative graphic design.”
Krumware
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Management teams integrate Krumware to oversee their technical and development activities, allowing them to concentrate on their core business functions.
Highlights
$25,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Columbia, South Carolina, Us
Services Provided+2 Services
21% Custom Web Application Development
4% Legacy System Modernization
15% Interaction Design
10% Product UX Strategy
AI Summary
“Krumware provides management teams with tools to oversee technical and development operations, enabling focus on core business activities through effective integration and oversight solutions.”
AWAN Innovative Solutions
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Accelerated Market Readiness: Achieved a 20% reduction in project delivery times via Agile methodologies and strategic planning. Enhanced Development Speed: Cut deployment times by 40% through the adoption of DevOps best practices. Improved Service Quality: Increased issue resolution efficiency by 3
Highlights
$25,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Services Provided+1 Services
29% Custom Web Application Development
5% Legacy System Modernization
23% DevOps Engineering
10% Managed IT Services
AI Summary
“AWAN Innovative Solutions streamlines project delivery and software deployment through Agile and DevOps practices, enhancing service quality, team efficiency, and customer satisfaction across software development.”
Luminary Software Corporation
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Luminary Software, located in Calgary, is a web design and digital marketing agency dedicated to helping small businesses across Canada enhance their online presence and achieve tangible results. We focus on creating high-performance websites, optimizing for search engines (SEO), managing social med
Highlights
10-49
Employees
Calgary, Alberta, Ca
Services Provided+5 Services
10% Custom Web Application Development
13% Mobile App Development (iOS & Android)
3% Legacy System Modernization
10% Product UX Strategy
AI Summary
“Luminary Software Corporation is a Calgary-based agency offering web design, SEO, social media marketing, mobile app development, and hosting services to enhance small businesses' online presence across Canada.”
Tecknobliss inc
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Revolutionizing business through technology, TecknoBliss Inc. is a leading service provider focused on advanced custom software solutions. We specialize in updating outdated applications, creating mobile and web apps, supporting cloud migration, and integrating AI technologies. Our commitment is to
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Little Rock, Arkansas, Us
Services Provided+7 Services
8% Legacy System Modernization
7% Custom Web Application Development
5% Mobile App Development (iOS & Android)
8% Product UX Strategy
AI Summary
“Tecknobliss Inc. delivers custom software solutions including app modernization, mobile and web development, cloud migration, and AI integration, focusing on scalable, cost-effective systems tailored to client needs.”
WAAVI STUDIO S.L.
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We enable innovators to create impactful, transformative products. For more than five years, we have crafted and developed software solutions for both mobile and web users. Startups and renowned global brands have relied on us to bring their business ideas to fruition. Our expertise lies in JavaScri
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Madrid, Madrid, Es
Services Provided+1 Services
23% Mobile App Development (iOS & Android)
22% Custom Web Application Development
5% Legacy System Modernization
30% Machine Learning Model Development
AI Summary
“WAAVI STUDIO S.L. delivers innovative mobile and web software solutions using JavaScript frameworks and PHP, supporting startups and global brands with transformative product development for over five years.”
475 Cumulus
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We create and refine digital products from initial idea to end user. Our skills encompass both technical and product engineering, addressing all facets of product development services. Whether you need a brief consultation or a more extensive partnership, we are here to assist you in developing your
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided+4 Services
8% Legacy System Modernization
15% Mobile App Development (iOS & Android)
10% E-Commerce Development
18% Custom Web Application Development
AI Summary
“475 Cumulus offers comprehensive digital product development services, from ideation to delivery, combining technical expertise and innovative product engineering to support diverse client needs.”

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Top Legacy System Modernization Firms

List of the Best Legacy System Modernization Agencies

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