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

Gotogler Technologies
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Gotogler Technologies is a technology partner focused on delivering results, specializing in creating scalable digital products, AI-driven solutions, and high-performance web and mobile applications. We collaborate with startups, small and medium-sized enterprises, and large corporations to turn ide
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided+5 Services
10% AI Strategy & Roadmap Consulting
8% Workflow Automation (Zapier / Make / n8n)
5% Cloud Consulting & SI
3% CRM Consulting and SI
AI Summary
“Gotogler Technologies delivers scalable digital products, AI-driven solutions, and web/mobile apps, partnering with businesses to accelerate growth through innovative, agile, and results-focused software development.”
Nextedge cloud Co. Ltd
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Nextedge Cloud is a prominent technology provider that offers a variety of services, such as monitoring, web hosting, data center management, data consulting, cloud solutions, enterprise application development, app development, data analysis and visualization, computer system maintenance, and netwo
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
250-999
Employees
Services Provided+20 Services
1% Blockchain & Web3 Development
2% Code Review & Technical Audits
3% Mobile App Development (iOS & Android)
2% Legacy System Modernization
AI Summary
“Nextedge Cloud Co. Ltd. is a technology provider specializing in cloud services, data management, application development, system maintenance, and comprehensive networking solutions.”
Shannxi Hua Ming Digital World Company
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We offer tailored software development services.
Highlights
$10,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+3 Services
14% Custom Web Application Development
3% Legacy System Modernization
7% ERP & CRM Development
5% Frontend Development
AI Summary
“Shannxi Hua Ming Digital World Company specializes in providing tailored software development services, delivering customized digital solutions to meet diverse client needs with professional expertise.”
U
Unit 6
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A skilled, agile group that can engage at any point—whether it's discovery, planning, or active implementation—and assumes complete responsibility for bringing products to market. We connect business objectives with technical execution, functioning as a seamless extension of your team to achieve tan
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+5 Services
10% Backend Development
8% API Development & Integration
12% Custom Web Application Development
3% Legacy System Modernization
AI Summary
“Unit 6 is an agile, skilled partner that integrates with teams across discovery, planning, and implementation stages to deliver market-ready products aligning business goals with technical execution.”
P
PSI Square
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Nearly all companies are encountering the challenge of adopting digital transformation. Whether your goal is to utilize augmented reality to enhance certain operational aspects (value chain) or to create an IoT ecosystem with Smart Contracts, Psi Square is here to comprehend and provide all the esse
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Lahore, Pk Punjab, Pk
Services Provided+11 Services
8% Custom Web Application Development
5% API Development & Integration
4% Frontend Development
2% Legacy System Modernization
AI Summary
“Since 2015, PSI Square delivers comprehensive digital transformation solutions, including augmented reality and IoT ecosystems, to optimize operations and achieve business objectives across industries.”
bitorbit
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Receive comprehensive assistance in product design, brand strategy, and development.
Highlights
$100-149/hr
Avg Hourly Rate
2-9
Employees
Berlin, Berlin, De
Services Provided+14 Services
10% Mobile App Development (iOS & Android)
4% Legacy System Modernization
6% E-Commerce Development
8% Product Design
AI Summary
“BitOrbit offers comprehensive support in product design, brand strategy, and development, delivering integrated solutions that enhance business growth and market presence.”
Meerkatly Software House
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We are an expanding team of skilled yet innovative developers eager to bring your project to life. We can collaborate with you using agile methodologies and a wide range of technologies, including JavaScript front-end and back-end frameworks, blockchain, and machine learning algorithms.
Highlights
2-9
Employees
Services Provided+3 Services
20% Custom Web Application Development
10% Mobile App Development (iOS & Android)
20% Blockchain & Web3 Development
10% E-Commerce Development
AI Summary
“Meerkatly Software House is a dynamic development team specializing in agile project collaboration across JavaScript frameworks, blockchain, and machine learning to deliver innovative software solutions.”
E
EBS WebProject - Website design agency
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Web design agency. Assurance at its best. Expert web design firm for all your online and digital requirements.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Dubai, Dubayy, Ae
Services Provided+3 Services
13% E-Commerce Development
17% Custom Web Application Development
3% Legacy System Modernization
33% Custom AI Chatbot Development
AI Summary
“EBS WebProject is a professional web design agency delivering expert digital solutions and reliable online presence services tailored to diverse client needs.”
B
BREDEX GmbH
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BREDEX places a significant emphasis on creating customized solutions primarily for the automotive sector. As a result, BREDEX is well-equipped to handle a large volume of requests in intricate corporate settings and boasts an exceptional network of partner IT service companies across Germany and Ea
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Braunschweig, De
Services Provided+5 Services
10% Backend Development
13% Custom Web Application Development
2% Legacy System Modernization
25% Web App UI Design
AI Summary
“BREDEX GmbH specializes in customized IT solutions primarily for the automotive industry, leveraging extensive partnerships across Germany and Eastern Europe to manage complex projects efficiently.”
Codvo
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We are a rapidly expanding company that specializes exclusively in product engineering, driving digital innovations globally. Our expanding team of engineers, researchers, and designers is dedicated to developing "Right Fit" solutions tailored to meet the ambitious goals of our clients.
Highlights
50-249
Employees
Services Provided+6 Services
14% Custom Web Application Development
8% Mobile App Development (iOS & Android)
7% E-Commerce Development
5% Legacy System Modernization
AI Summary
“Codvo is a fast-growing product engineering firm delivering tailored digital solutions worldwide through its team of engineers, researchers, and designers focused on client success.”

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