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

CodePolicy Technologies
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CodePolicy Technologies is a trusted IT Managed Services Provider (MSP), delivering effective, long-term solutions for various business challenges and objectives. The company ensures that investments in Information Technology yield maximum returns for its stakeholders through strategic IT road-mappi
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Pune, Maharashtra, In
Services Provided
40% IT Staff Augmentation
40% Custom Web Application Development
10% Legacy System Modernization
10% Other IT Consulting and SI
AI Summary
“CodePolicy Technologies is an IT Managed Services Provider delivering innovative, technology-driven solutions across industries, leveraging AI, IoT, and advanced platforms to maximize business growth and efficiency.”
Downtown Applications
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Downtown Applications is a company that focuses on IT services, design, and mobile app creation. We develop hybrid, native, and cross-platform applications and offer consultancy for marketplaces to support business growth. Established in 2006, with official founding in 2007, our goal has always been
Highlights
$250,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
50-249
Employees
Services Provided+1 Services
15% Custom Web Application Development
40% Mobile App Development (iOS & Android)
15% API Development & Integration
10% E-Commerce Development
AI Summary
“Downtown Applications provides innovative IT and mobile app development services globally, employing lean methodologies to deliver efficient, cost-effective solutions that enhance client growth and ROI.”
Intelligaia
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**Intelligaia: Realizing Your Product's Potential** Intelligaia is a top UX team focused on realizing the full potential of your product. We offer a wide range of CX Design and Engineering services, including Design Workshops, Experience Design, Product Development, and UX for AI & Data Science. In
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Cary, North Carolina, Us
Services Provided+10 Services
35% Product UX Strategy
10% AR/VR & Mixed Reality Services
10% Legacy System Modernization
10% Managed IT Services
AI Summary
“Intelligaia specializes in comprehensive UX and CX design, product development, and AI-driven solutions, enhancing user experience and driving business growth for enterprises and startups alike.”
IC-KPI
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Information Connected focuses on linking various data points to equip business owners and managers with the necessary information for creating, tracking, and assessing Key Performance Indicators that influence all business areas. Over the past twenty years, we've collaborated with numerous leading E
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided
35% Custom Web Application Development
15% Legacy System Modernization
50% ERP Consulting and SI
AI Summary
“IC-KPI specializes in integrating diverse data to help businesses create and monitor effective Key Performance Indicators, overcoming generic ERP limitations for comprehensive organizational insights.”
Adaca
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Adaca collaborates with medium to large enterprises and government organizations to provide outstanding software development results through top-tier engineering teams and AI-enhanced capabilities. Established in 2015, we have gained a reputation for fostering strategic partnerships rather than mere
Highlights
$25,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Sydney, New South Wales, Au
Services Provided+1 Services
25% Custom Web Application Development
15% API Development & Integration
10% Legacy System Modernization
20% AI Strategy & Roadmap Consulting
AI Summary
“Adaca partners with medium to large enterprises and government bodies, delivering superior software development via elite engineering teams skilled in AI, cloud, integration, and security.”
Jumar Technology
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With two decades of design and delivery expertise, Jumar Technology (www.jumar-technology.com) assists its clients in harnessing new technologies to achieve sustainable business growth while optimizing existing investments. Jumar Technology addresses challenges related to capacity, capability, and m
Highlights
$10,000+
Min Project Size
50-249
Employees
Marston Green, West Midlands, Gb
Services Provided
35% Custom Web Application Development
15% Legacy System Modernization
20% CRM Consulting and SI
30% Cloud Consulting & SI
AI Summary
“Jumar Technology leverages two decades of expertise to deliver agile IT solutions, optimizing infrastructure and enhancing business growth through customer experience, operational efficiency, and risk management.”
Inorbital.
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Inorbital is a digital agency located in Toronto, focused on implementing enterprise CMS and DXP solutions, such as Xperience by Kentico and WordPress, for various sectors including associations, labor unions, insurance, finance, healthcare, and public services across Canada. With over 20 years of e
Highlights
$50,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Toronto, Ontario, Ca
Services Provided+3 Services
13% Custom Web Application Development
5% E-Commerce Development
15% Legacy System Modernization
17% CMS Development & Customization
AI Summary
“Inorbital is a Toronto-based digital agency specializing in enterprise CMS and DXP solutions, delivering secure, accessible, and scalable digital platforms across diverse regulated sectors in Canada.”
UpCodo Digital
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Transforming Complex Business Problems into High-Performing Digital Solutions Many organizations excel at generating ideas, but they often struggle with execution. The disconnect between vision and functional software is where most projects fall short. UpCodo Digital is dedicated to bridging that
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Greater Noida, Uttar Pradesh, In
Services Provided+4 Services
15% Custom Web Application Development
15% Mobile App Development (iOS & Android)
10% Legacy System Modernization
8% E-Commerce Development
AI Summary
“UpCodo Digital, established in 2019, delivers high-quality custom software solutions including mobile apps, AI integration, and modernization, ensuring timely execution and client-focused development globally.”
eM2Soft
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eM2Soft SRL is a privately owned software firm based in Sibiu, Romania, dedicated to delivering top-notch IT services. Established in 2003, the company has specialized in offering solutions and IT support for the German market. By employing contemporary methods and tools, we have created advanced ar
Highlights
$50,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Sibiu, Sibiu, Ro
Services Provided
45% Custom Web Application Development
25% Mobile App Development (iOS & Android)
15% Legacy System Modernization
15% QA & Software Testing
AI Summary
“eM2Soft SRL, founded in 2003 in Romania, delivers advanced IT solutions and support, specializing in sophisticated architectures mainly for the German market using modern technologies.”
Appsilon | Open Source, Done Right for Pharma
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Effective Open Source Solutions for Pharma We partner with life sciences companies to provide open-source AI, R, and Python tools, as well as cloud-based statistical computing environments and assistance in transitioning from SAS to Open Source, all aimed at speeding up drug development in regulated
Highlights
$10,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
50-249
Employees
Warszawa, Masovian, Pl
Services Provided+2 Services
33% Business Intelligence (BI) Dashboard Development
20% Other IT Consulting and SI
10% BI & Big Data Consulting & SI
4% ECM Consulting and SI
AI Summary
“Appsilon partners with life sciences companies to deliver open-source AI, R, and Python tools and cloud-based environments, accelerating drug development in regulated pharmaceutical settings.”

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Top Legacy System Modernization Firms

List of the Best Legacy System Modernization Agencies

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