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

Daphnis Labs
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We are a passionate mobile app and game development company with 2.5 years of experience. We've collaborated with around 40 startups and small to medium-sized enterprises located in countries like India, Russia, Singapore, and Australia. Our work spans various industries and platforms, and we suppor
Highlights
$25-49/hr
Avg Hourly Rate
10-49
Employees
New Delhi, Delhi, In
Services Provided+5 Services
3% Legacy System Modernization
13% Mobile App Development (iOS & Android)
4% Custom Web Application Development
6% Web App UI Design
AI Summary
“Daphnis Labs is a mobile app and game developer with 2.5 years' experience, serving startups and SMEs globally across diverse industries from ideation to retention.”
Eprecisio Technologies
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At Eprecisio, we assist businesses in achieving smarter and faster growth through Cloud Solutions, DevOps, MLOps & AIOps, Agentic Automation, Web & Mobile Development, and Quality Assurance Testing Services. We develop technology that operates seamlessly in the background, allowing you to concentrat
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Austin, Texas, Us
Services Provided+20 Services
8% Custom Web Application Development
6% SaaS Product Development
5% Backend Development
4% Frontend Development
AI Summary
“Eprecisio Technologies delivers comprehensive cloud, AI-driven automation, DevOps, and software development services, enabling businesses to enhance growth, efficiency, and operational reliability across industries.”
Tendigi (Acquired by Work & Co)
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We are a design and development studio dedicated to creating exceptional mobile applications. Since 2010, startups, small businesses, and large enterprises have relied on our cohesive approach, which combines strategy, design, and engineering. We have a solid track record of providing distinctive mo
Highlights
$75,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+1 Services
35% Mobile App Development (iOS & Android)
10% Custom Web Application Development
5% Legacy System Modernization
20% Product UX Strategy
AI Summary
“Tendigi is a Brooklyn-based studio specializing in strategy-driven design and agile development of distinctive, high-quality mobile applications for startups to enterprises since 2010.”
CIDROY Technologies
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At Cidroy, we are passionate about developing and scaling products. We collaborate with startups and enterprises to help them create their ideal engineering teams and achieve comprehensive digital transformation. Our fundamental values include simplicity, innovation, agility, and passion. We are ded
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Margao, Goa, In
Services Provided+6 Services
14% Custom Web Application Development
8% E-Commerce Development
5% Legacy System Modernization
7% Mobile App Development (iOS & Android)
AI Summary
“Cidroy Technologies partners with startups and enterprises to deliver tailored software and product development solutions, specializing in cloud, digital transformation, and modern technologies across diverse industries.”
Obvious Ridge Route LLC
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Obvious Ridge Route (ORR) is a global network of collaborative talent dedicated to achieving results. Our team features seasoned product managers, creatively driven UI/UX designers, and skilled software developers. When automation falls short, our business process outsourcing team ensures tasks are
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Glenview, Illinois, Us
Services Provided+8 Services
6% Custom Web Application Development
5% Mobile App Development (iOS & Android)
9% Blockchain & Web3 Development
1% Legacy System Modernization
AI Summary
“Obvious Ridge Route LLC is a global technology firm specializing in full-stack software and web3 development, UI/UX design, IT consulting, automation, and business process outsourcing for comprehensive digital solutions.”
Cielo App B.V. (partner of Naylalabs Soft. Dev. Agency)
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We specialize in designing and developing a wide array of products, ranging from mobile and web applications to VR/AR experiences and game development. If you seek more than just developers but a partner that can fully engage with your projects, you’ve found us. Our team consists of young, dynamic d
Highlights
$25,000+
Min Project Size
10-49
Employees
Istanbul, Tr
Services Provided+6 Services
10% Mobile App Development (iOS & Android)
10% Custom Web Application Development
4% E-Commerce Development
1% Legacy System Modernization
AI Summary
“Cielo App B.V., partner of Naylalabs, delivers diverse digital solutions including mobile, web, VR/AR, and games with agile project management and innovative, creative engineering.”
WebReinvent Technologies Pvt Ltd
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WebReinvent is a software development firm offering a variety of comprehensive software product development services. We have successfully created MVPs and enterprise-level web applications for startups and MSMEs alike. Additionally, we specialize in API development and multi-tenant SaaS application
Highlights
$10,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
New Delhi, Delhi, In
Services Provided+10 Services
8% Custom Web Application Development
3% Mobile App Development (iOS & Android)
7% API Development & Integration
7% SaaS Product Development
AI Summary
“WebReinvent Technologies Pvt Ltd. delivers comprehensive software development services, specializing in MVPs, enterprise web applications, APIs, and multi-tenant SaaS for startups and MSMEs.”
The Digital Partners
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We are a specialized digital product and technology consultancy. We have collaborated with some of the top organizations globally to assist them in defining, designing, developing, launching, and expanding their digital brands and products. Our UK-based partners provide expert knowledge from leading
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided+3 Services
15% Custom Web Application Development
10% Mobile App Development (iOS & Android)
5% E-Commerce Development
4% Legacy System Modernization
AI Summary
“The Digital Partners is a UK-based digital product and technology consultancy helping global organizations design, develop, and expand digital brands through expert collaboration and tailored solutions.”
C
Company Removed
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Examination
Highlights
$100,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
Koto City, Jp
Services Provided+5 Services
14% Custom Web Application Development
10% Legacy System Modernization
10% Mobile App Development (iOS & Android)
8% Other IT Consulting and SI
AI Summary
“Company Removed delivers tailored software development, intelligent automation, and secure cloud infrastructure services, enabling enterprise clients to modernize systems and optimize IT operations across industries.”
Owl Logic Labs
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Owl Logic Labs is a purpose-driven software consulting studio focused on precision and people. We create tailored technology solutions that make complex tasks simpler, empower teams, and foster growth. Our extensive expertise in web development, DevOps, UI/UX, cloud architecture, and AI integrations
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+9 Services
12% Custom Web Application Development
3% E-Commerce Development
5% Legacy System Modernization
8% Backend Development
AI Summary
“Owl Logic Labs is a Colombia-based software consulting studio specializing in customized technology solutions across web development, DevOps, UI/UX, cloud, and AI, partnering globally with clients to deliver quality digital products.”

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Top Legacy System Modernization Firms

List of the Best Legacy System Modernization Agencies

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