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Top 15 Legacy Modernization Vendors in 2025

If you are searching for a reliable IT modernization partner, explore the actual list of the best legacy software companies. The vendors were selected based on their professional focus, expertise, and real business impact delivered by their projects. The list breaks down the basic information about each IT company for a closer glance.

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    Corsac Technologies

Legacy Stacks:

 .NET Framework, AngularJS (Angular 1.x), Xamarin, ASP.NET Web Forms, Monolithic architecture, JavaScript, jQuery, React Native, ASP.NET Web Forms, VB.NET, SQL Server Reporting Services (SSRS), JavaScript (ES5), Delphi, ColdFusion, COBOL, FoxPro

Modern Alternatives: 

 .NET Core/.NET, Angular​, .NET MAUI, Blazor/WebAssembly​, Microservices architecture​, TypeScript​, React/Vue/Angular​, Flutter​, ASP.NET Core MVC​, C# .NET​, Power BI/Tableau​, JavaScript (ES6+)​, C#​

Hourly Rate: 

Undisclosed

Team Size:

50 - 249

Year Founded:

2007

MARKETS:

USA, Europe

Company Description

Corsac Technologies is a software development company that specializes in breaking tech stagnation and unlocking limitless growth potential. With vast experience across sectors, the company transforms aging platforms into scalable, advanced solutions. 
Corsac unites legacy software experts with profound tech skills and knowledge of both legacy and advanced systems to transform smoothly, without needless major revamps. Confirmed success in highly regulated industries guarantees reliable security and compliance. Empowered with AI and emerging tech, they specialize where others generalize to reach meaningful, measurable, and lasting business results.

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    DXC Technology

Legacy Stacks:

-

Modern Alternatives: 

-

Hourly Rate: 

Undisclosed

Team Size:

10,000+

Year Founded:

2017

Location:

USA

Company Description

DXC Technology offers solutions backed by the innovative power of AI. The company operates worldwide, leveraging breakthrough technology to help clients move their businesses forward. As a legacy software company, DXC aims to simplify, optimize, and streamline operations for their clients by introducing advanced methodologies, implementing AI, and administering critical workloads. Their domain expertise covers aerospace and defense, energy, finance, retail sectors and more. Transparency, security, and trust are the pillars of their cooperation, making them one of the most reliable legacy modernization vendors. 

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    Smartbridge

Legacy Stacks:

-

Modern Alternatives: 

AWS, Azure, Docker, Python, Java, Node.js, .NET Core, and many others

Hourly Rate: 

$150 - $199 / hr

Team Size:

50 - 249

Year Founded:

2003

Location:

USA

Company Description

Smartbridge specializes in application modernization to empower business agility and scalability. The range of the company’s services encompasses data and analytics, digital innovation, intelligent automation, and AI implementation. A trustworthy legacy modernization vendor, Smartbridge carefully assesses the old application and its potential to efficiently transform it into a capable solution. Their team focuses on removing dependence on outdated infrastructure, utilizing cloud services, enriching integrations and analytics, and enabling automations to help their clients reach resilient expansion. 

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    The Smyth Group

Legacy Stacks:

-

Modern Alternatives: 

Modern Alternatives: AWS, Azure, Docker, Python, Java, Node.js, .NET Core, Microservices, and many others

Hourly Rate: 

$150 - $199 / hr

Team Size:

10 - 49

Year Founded:

2005

Location:

USA

Company Description

The Smyth Group is one of the leading legacy software modernization companies in the USA. Emphasizing their strategic approach to software transformation, the company closely cooperates with its clients to reveal fundamental issues and strategize impactful solutions. To ensure custom products that deliver real results, the team has established a proven development approach, from strategizing to scaling, with each step having clear deliverables. This way, The Smyth Group guarantees a transparent process where clients stay updated and track a step-by-step progress.

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    Devox Software

Legacy Stacks:

-

Modern Alternatives: 

Angular,, .NET, Java, Python, React JS, Vue JS, Node JS, and many others

Hourly Rate: 

$50 - $99 / hr

Team Size:

50 - 249

Year Founded:

2018

Location:

USA, Poland, Ukraine

Company Description

Devox Software focuses on fixing issues with outdated software and rebuilding ancient products to make them fresh and high-performing. The team aptly addresses security compromises, vendor dependencies, and staggering workflows by implementing AI, Web3, IoT, and more. The team proudly introduces their proprietary tool - AI Solution Accelerator™ that propels quality and reduces development time. It carries AI-enabled capabilities to remove inefficiencies through extensive automations and AI-empowered workflows. The true value of their services is confirmed by a 95% customer satisfaction rate.

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    Inoxoft

Legacy Stacks:

-

Modern Alternatives: 

Flutter, React JS, Python (Django), Golang, Node.js, Ionic, .NET, ASP.NET, React Native

Hourly Rate: 

$25 - $49 / hr

Team Size:

50 - 249

Year Founded:

2014

Location:

USA, Poland, Ukraine

Company Description

Inoxoft software development company delivers a wide range of IT services. Focusing on small and medium-sized businesses and startups, Inoxoft introduces modern, scalable solutions for innovation and business expansion. The company’s services include certified web and mobile application development, comprehensive product discovery, advanced UI/UX design, Big Data analytics, and more. They are proficient in the IT solutions for education, real estate, blockchain, healthcare, fintech, and logistics. The Inoxoft’s team takes pride in the ability to address true business challenges and open the opportunities to establish confident market presence.

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    Leobit

Legacy Stacks:

WCF, WinForms, VB.NET, Delphi, etc.

Modern Alternatives: 

.NET Core, Angular, microservices, ASP.NET, C#, Azure, WCF, Entity Framework, Blazor, React, Vue, jQuery, TypeScript, PHP, Python

Hourly Rate: 

$25 - $49 / hr

Team Size:

50 - 249

Year Founded:

2014

Location:

Ukraine, Poland 

Company Description

Leobit is an award-winning IT service provider, delivering an exhaustive range of software development services. The company holds certifications and awards witnessing quality and outstanding results. The team of dedicated professionals adapt the collaboration model right to the client's needs. In every project, they act as technology advisors, holding the task holistically, from inception to maintenance and support. The company also has its own design studio that provides comprehensive UI/UX design services including UX consulting, discovery phase, prototyping and testing.

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    Euvic

Legacy Stacks:

-

Modern Alternatives: 

AWS, Azure, Docker, Python, Java, Node.js, .NET Core, Microservices, and many others

Hourly Rate: 

$50 - $99 / hr

Team Size:

1,000 - 9,999

Year Founded:

2005

Location:

Poland, Germany, USA, and 4+ countries

Company Description

Euvic provides software development services globally, with offices in more than 20 locations. The team builds digital solutions from scratch or in required parts, optimises and automates business operations utilizing cloud infrastructure, integrates products into a unified platform, accelerates operations, and implements AI. With a result-focused approach, they modernize applications into scalable solutions. Euvic also helps their clients with team augmentation, selecting IT specialists for specific projects and handling all hiring procedures.

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    Accenture

Legacy Stacks:

-

Modern Alternatives: 

AWS, Azure, Docker, Python, Java, Node.js, .NET Core, Microservices, and many others

Hourly Rate: 

Undisclosed

Team Size:

1,000 - 9,999

Year Founded:

1998

Location:

Hong Kong

Company Description

The Accenture software development company offers a 360° approach to address the client’s demands. They interpret this method as a unique combination of financial and business value, as well as their commitment to attain an all-encompassing progress for their clients. Apart from modernization and development services, the team also helps their clients to reskill and upskill their internal staff and achieve sustainability goals. Experienced engineers leverage cloud infrastructure, AI, risk management and technology to deliver meaningful experiences and lasting results.

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    Innowise

Legacy Stacks:

-

Modern Alternatives: 

AWS, Microsoft Azure, Google Cloud, Kubernetes, Docker

Hourly Rate: 

$50 - $99 / hr

Team Size:

1,000 - 9,999

Year Founded:

2007

Location:

Poland, Ukraine, Germany, Lithuania

Company Description

Innowise is one of the leading legacy service management vendors with an extensive team of professionals and broad experience. They offer full-cycle development services, from consulting and strategy to post-launch support. Across industries and sectors, they bring in innovations, removing legacy issues and risks. They focus on removing old vendor dependencies, extensive maintenance costs, trapped data, and inefficient workflows, infusing agility and scalability into the outdated systems. Through modern, bespoke solutions, Innowise helps their clients jump ahead in the competitive landscape.

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    ModLogix

Legacy Stacks:

-

Modern Alternatives: 

 Microsoft .NET (C, Visual Basic, FoxPro), Azure, Java, MS Access, SQL Server.

Hourly Rate: 

$25 - $49 / hr

Team Size:

50 - 249

Year Founded:

2014

Location:

USA, Ukraine

Company Description

ModLogics is a full-scale software modernization company with the core focus on transforming ancient systems into advanced, scalable solutions. They have experience and expertise in system audits, legacy upgrades, cloud migration, API integration, software re-engineering and more. In terms of tech stack, the team specializes in .NET Core migration, Visual FoxPro modernization, and Angular migration, with .Net technologies being their primary focus. The company attains enhanced performance, data integrity, and cost-efficiency with the help of their granular approach that splits the process and ensures progress at every stage. 

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    Euristiq

Legacy Stacks:

-

Modern Alternatives: 

AWS, Google Cloud, Kubernetes, React, Angular, Vue.js, Python, Golang, Node.js, Java, Kotlin, .Net

Hourly Rate: 

$50 - $99 / hr

Team Size:

50 - 249

Year Founded:

2016

Location:

Canada, Ukraine, Poland

Company Description

Euristiq crafts tailored strategies to deliver functional and innovative solutions that spur operational efficiency. As a software development company, it transforms applications by leveraging cloud migration, application re-engineering, mainframe modernization, and AI-baked tools. Their team also consults on architecture redesign and software support to guarantee that businesses achieve and retain a long-lasting ability to expand. The knowledge and experience with AI potential allows Euristiq to remove security risks and reinforce innovation by implementing IoT, AIoT, and data analytics. With intelligent modernization, the company pushes its clients toward a competitive edge. 

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    Code District

Legacy Stacks:

-

Modern Alternatives: 

Modern Alternatives: Angular, React, Clojure, microservices, Cloud-ready systems, and many others

Hourly Rate: 

$25 - $49 / hr

Team Size:

250 - 999

Year Founded:

2017

Location:

USA, Pakistan, Canada

Company Description

Code District is another representative of the top legacy systems modernization companies. Staying at the forefront of advanced technology, they leverage AI to craft new digital products and modernize existing ones. With deep expertise across industries and professional understanding of business needs, Code District’s engineers help clients expedite launches, enhance the user experience, reduce manual involvement, and scale effortlessly to accommodate growing demands. The team prioritizes transparency and open communication on the way to successful, user-oriented digital products.

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    Onix

Legacy Stacks:

-

Modern Alternatives: 

Python, Node.js, Java, Ruby, PHP, AWS, Azure, Google Cloud Platform, Heroku, DigitalOcean

Hourly Rate: 

$25 - $49 / hr

Team Size:

250 - 999

Year Founded:

2000

Location:

Ukraine, Poland, Slovakia

Company Description

Onix is an IT development company that specializes in software rescue missions. Their team quickly and accurately fixes existing troubles, whether it’s a faulty code, missing feature, or a whole staggering project. They provide full-fledged modernization services to ignite the growth of startups, small and medium-sized businesses. Onix applies a set of well‑established methodologies and profound industry experience to deliver viable products that make businesses thrive. Clients praise their ability to achieve the set goals, while staying within the time and budget limits.

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    TSRI

Legacy Stacks:

35+ Languages
COBOL, PL/1, JCL, CA-IDEAL, Ada, Fortran, and more 

Modern Alternatives: 

Java, C#, .NET Core, C++, and more

Hourly Rate: 

Undisclosed

Team Size:

50 - 249

Year Founded:

1995

Location:

USA

Company Description

TSRI is an innovative provider of software development services that prepares businesses to adopt advanced technology. They transfer systems from legacy to a future-ready condition by utilizing Composite AI (deterministic AI & generative AI). The team’s expertise together with modern technology allows for minimal risk and business disruption. Their proven approach practically eliminates errors and risks and drastically cuts the development time. Clients confirm the efficiency of TSRI’s undertakings in migration, refactoring, and modernization of software applications.

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How to Choose the Best Provider Among Cloud Migration Services Companies

Evaluate experience and expertise in cloud platforms

Check cloud specialization and certifications, as well as domain expertise. You are looking for legacy software companies that● Have official certifications with AWS, Azure, or Google Cloud● Are well-versed in multi-cloud or hybrid migration● Have experience in your industry● Can show measurable client results

Ensure security and compliance

Your partner must deliver non-compromised security and regulatory compliance to eliminate risks and penalties. Check if they:● Guarantee compliance with GDPR, HIPAA, ISO27001 and other standards● Implement full encryption and access control
● Conduct regular security checks and provide reports

Consider minimal downtime for your business

Evaluate potential partners based on their respect to your business continuity. You should expect the following:● A provider employs phased migration methods● Implements risk-mitigation strategies● Works with minimal interference with your internal team● Integrates into your Git, CI/CD, and workflow tools, to make modernization smooth, testable, and traceable.

Ensure scalable and future-ready systems

Think of your migration project strategically, assessing the future impact and opportunities. In this sense, your partner should provide:● Scalable architectures ready for future workloads● Modern cloud-native tools that empower innovation
● The ability to meet changing needs with minimal expensive redesigns.

Check whether your expenses are optimized

● Reliable legacy software expert firms guarantee transparency and cost-efficiency. Favor vendors who offer the following:● Detailed cost estimates before the migration project starts● Continual workload optimization and measures to avoid extra spends● Special tools and techniques for budget control

Ask about post-migration support

Committed providers ensure that the delivered product works up to the expectations and help maintain its seamless operation. Consider, whether your partner● Provides continual monitoring and issue fixing● Refines performance and implements updates● Optimizes system’s operation in a long run to drive ROI

Contacts

Contact Us Now for Seamless Software Modernization.

Ready to experience the Corsac Technologies difference?

Don’t let outdated systems slow your business down – connect with us today and let our experts transform your legacy software into modern, high-performing solutions. Schedule a consultation with our specialists now!

Modernization Experts
+1 416 505 4524moc.hcetcasroc%40ofni

Where to Find Us
Canada HQ: 16 Yellow Birchway, North York, ON, Canada M2H 2T3
U.S. Correspondence Address: 30 N Gould St #11138, Sheridan, WY, USA 82801

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At Corsac Technologies, we’re here to breathe new life into your legacy software, ensuring a smooth and future-ready transformation

Modernization

Software Migration

Engineering

Industries

© Created by Corsac Technologies

Privacy Policy

terms and conditions

All rights Reserved

At Corsac Technologies, we’re here to breathe new life into your legacy software, ensuring a smooth and future-ready transformation

Modernization

Software Migration

Engineering

Industries

© Created by Corsac Technologies

Privacy Policy

terms and conditions

All rights Reserved