Digital Transformation

Top Legacy Application Modernization Companies for SMBs and Enterprise

Top Legacy Application Modernization Companies (2026 Review)

Legacy software isn’t just outdated — it’s holding businesses back.

In 2026, enterprise and mid-sized organizations across industries are racing to modernize outdated platforms, cloud-migrate aging infrastructure, and transform brittle legacy codebases into agile, cloud-native applications. Whether you’re dealing with COBOL monoliths or decade-old .NET platforms, legacy application modernization is now a strategic growth driver, not just a technical initiative.

But picking the right modernization partner is just as important as the tech stack you choose.

We’ve compiled an independent review of the top legacy application modernization companies in 2026. This guide highlights the market leaders, key capabilities, ideal use cases by company size.

The Market Landscape: Why Modernization Can’t Wait

In today’s tech ecosystem, legacy applications create massive friction:

⛔ Incompatible with cloud infrastructure

⛔ Vulnerable to security threats

⛔ Expensive to maintain

⛔ Blockers to data-driven innovation

According to Fedir Kompaniiets, CEO of Gart Solutions:

“Modernization isn’t a one-time project. It’s a continuous transformation strategy — and it must be aligned with your business model, not just your IT budget.”

Modernizing legacy systems unlocks:

  • Cloud-native scalability
  • CI/CD automation
  • Security and compliance (HIPAA, SOC 2, GDPR)
  • Cost efficiency and agility

Now let’s look at the vendors changing the game.

The State of Legacy Application Modernization in 2026

Legacy modernization isn’t just about refactoring code anymore. It’s about reimagining entire application architectures, aligning with cloud-native environments, embedding AI, ensuring regulatory compliance, and deploying CI/CD pipelines that reduce release cycles from weeks to hours.

Here’s what’s driving this urgency:

  • Cloud-first mandates: Enterprises are shifting aggressively to AWS, Azure, and Google Cloud.
  • Cybersecurity compliance: GDPR, HIPAA, SOC 2, ISO, and new regional laws require modern, secure architectures.
  • Data-driven demands: Legacy systems can’t deliver real-time data insights.
  • DevOps adoption: Legacy apps often block automation and continuous delivery.

According to Fedir Kompaniiets, CEO of Gart Solutions:

“Modernization isn’t just a tech upgrade. It’s a strategic reinvention. We’re not replacing old systems —we’re rebuilding how businesses operate in a digital-first world.”

With that context, let’s break down the top modernization providers this year — starting with the standout.

How to Choose the Right Legacy Modernization Partner

Before choosing a vendor, evaluate them against these critical criteria:

Selection CriteriaWhy It Matters
Experience with your legacy tech stackCan they handle your current codebase (.NET, Java, COBOL, PHP)?
Compliance & security readinessSOC 2, HIPAA, GDPR, ISO 27001—do they build with these in mind?
CI/CD and DevOps capabilitiesCan they automate deployment and testing pipelines?
Modernization roadmap (not just cloud migration)Do they offer re-architecting, not just “lift and shift”?
Post-modernization supportWill they offer monitoring, updates, and cloud cost optimization?
Industry-specific experienceDo they understand healthcare, fintech, media, or other regulated industries?
Transparent pricing & agile deliveryCan they operate within your budget and timelines?
How to Choose the Right Legacy Modernization Partner

Gart Solutions ticks every box—especially for organizations needing fast, secure modernization with industry compliance.

Top Legacy Application Modernization Providers

1. Gart Solutions – The Top Modernization Partner for SMBs

Founded with a focus on legacy systems transformation, Gart has grown into a mid-sized powerhouse delivering enterprise-grade modernization solutions with speed, agility, and technical precision. What separates them? They don’t just “lift and shift” old applications to the cloud — they rebuild them for long-term value.

Gart Solutions leads the market with a laser focus on regulated industries, DevOps-first execution, and modernization without disruption.

Quick Profile:

  • Core Services: Legacy replatforming, DevOps, CI/CD, Kubernetes, cost optimization
  • Industries Served: Healthcare, AI/ML, FinTech, Media, Insurance
  • Standout Capabilities: Full-cycle modernization + infrastructure automation
  • Certifications: AWS, Azure, Kubernetes, SOC 2 practices
  • Why Choose Them: Personalized strategy + real-world delivery proven by multiple case studies

Notable Success Stories:

Explore Services:
Legacy Application Modernization
IT Modernization Solutions

Gart Solutions is a niche player, but incredibly valuable for companies locked into very old systems that need automated refactoring to Java or C#.

2. AccentureThe Top Modernization Partner for Enterprise

Accenture is the juggernaut of enterprise transformation. With a presence in over 120 countries, they bring enormous consulting firepower. Their legacy modernization approach combines cloud migration with digital transformation strategy, but the scale often comes with overhead. Best for Fortune 500 firms seeking broad initiatives.

Strengths:

  • Global reach and resources
  • Strong cloud-native transformation frameworks

Limitations:

  • Less flexible for mid-market projects
  • Higher cost and slower execution cycles

3. IBM Consulting

IBM has deep legacy roots — literally. Its experience in mainframes gives it a strong base for modernization. IBM Consulting blends traditional system reengineering with AI-powered solutions through tools like IBM watsonx.

Strengths:

  • Decades of experience in core legacy systems
  • Mature AI/ML integration for modernization

Limitations:

  • Often focused on IBM’s tech stack
  • High complexity for smaller teams

4. Deloitte

Deloitte’s tech practice brings strategy-driven modernization with governance-heavy processes. They shine in enterprise transformation but often layer on consulting bureaucracy that’s not ideal for time-sensitive product teams.

Best for: Government, banking, and heavily regulated industries

Not ideal for: Startups or tech-first SMBs

5. HCLTech

HCL offers end-to-end modernization with strong results in banking, healthcare, and telecom. Their cloud-native, microservices-first strategies help break down monoliths into manageable components.

Good to know: They use AI-driven accelerators for faster codebase analysis.

6. Cognizant

Cognizant offers a well-rounded modernization service combining AI, cloud, and automation. Their industry-specific models help reduce risk in critical migrations.

Popular with: Pharma, finance, and logistics clients

7. Wipro

Wipro is betting big on generative AI, using it to refactor and rebuild legacy platforms faster. Their strengths lie in smart automation and re-architecting for cloud-native environments.

8. Radixweb

A rising mid-size contender, Radixweb focuses on modernization frameworks with cloud migration and code refactoring. Good developer-centric approach with solid documentation.

9. Innowise Group

This European firm offers agile modernization with DevOps pipelines and microservices adoption. Strong choice for companies looking for rapid MVP rebuilds.

10. ModLogix

ModLogix is ideal for businesses running legacy Microsoft technologies. Their focused expertise in .NET re-engineering makes them a strong choice for tech teams needing clean refactors without full re-platforming.

11. Devox Software

Devox helps businesses rework older systems for mobile-first, cloud-ready environments. They’re best known for their blend of design thinking and solid backend work.

12. Imaginary Cloud

Great for product companies and SaaS platforms, especially if the current stack needs interface upgrades alongside backend modernization.

13. Intellias

Intellias serves as a technical accelerator for fast-growing firms. Their sweet spot lies in complex digital platforms undergoing transformation.

14. Euvic

Euvic shines in hybrid cloud and application lift-and-shift, with a strong track record among logistics and manufacturing SMBs in Europe.

15. Cloudticity

If you’re an SMB in the healthcare space, Cloudticity offers HIPAA-compliant modernization paths with automated deployment and security monitoring.

Full Comparison Table: Enterprise vs SMB-Focused Providers

Here’s a breakdown of the top legacy application modernization companies, segmented by their primary market focus, capabilities, and core strengths:

CompanyPrimary FocusBest ForStrengthsHQ Region
Gart SolutionsSMBRegulated industries, agile teamsDevOps, CI/CD, infrastructure + cloud modernizationEurope (Global)
AccentureEnterpriseFortune 500, global rolloutStrategy, large-scale cloud and legacy migrationGlobal
IBM ConsultingEnterpriseMainframe-heavy environmentsAI tooling, reengineering legacy platformsGlobal
DeloitteEnterpriseGovernment, financial servicesGovernance-heavy modernization, audit-aligned processesGlobal
HCLTechEnterpriseBFSI, TelecomMicroservices, AI accelerators, regulated transformationIndia (Global)
CognizantEnterpriseHealthcare, pharma, logisticsAI-based refactoring, agile platform transformationGlobal
TCSEnterpriseBanking, insuranceBroad modernization delivery, hybrid cloudGlobal
WiproEnterpriseGenAI and automation-driven orgsGenerative AI, microservices, platform modernizationIndia (Global)
RadixwebMid to EnterpriseInternal business appsCloud replatforming, code refactor, app lifecycle supportIndia
IntelliasSMB / Mid-marketTech startups, digital productsAgile rebuilds, platform enhancementsEastern Europe
Devox SoftwareSMB / Mid-marketMVPs, SaaS companiesCustom software engineering, front-end + backend revampEastern Europe
ModLogixSMBMicrosoft stack modernization.NET apps, code audit, incremental rebuildsUSA
Imaginary CloudSMBUX-centric product companiesInterface modernization, UI/UX excellencePortugal
Euvic, Inc.SMB / Mid-marketLogistics, IT servicesHybrid cloud, legacy systems migrationPoland
CloudticitySMB (Healthcare)Small healthcare providersAWS, HIPAA, compliance-first modernizationUSA
TSRISMB / Gov contractorsCOBOL / legacy language appsAutomated code conversion, legacy refactor to modern stackUSA
CI&TSMB to EnterpriseAgile teams, product firmsContinuous modernization & innovation cyclesGlobal
Enterprise vs SMB-Focused Legacy Modernization Providers

Modernization Use Cases: SMBs vs Enterprise Needs

Legacy modernization isn’t one-size-fits-all. Here’s how company size impacts the approach:

Business SizeCore NeedsRecommended Vendors
SMBsFast execution, lean budgets, UI revampsModLogix, Devox Software, Imaginary Cloud
Growth-stageCI/CD, scalability, API integrationGart Solutions, Intellias, Innowise Group
EnterprisesCompliance, cloud migration at scale, governanceGart Solutions, Accenture, IBM Consulting
Modernization Use Cases: SMBs vs Enterprise Needs

For SMBs, flexibility, cost, and timeline matter most.
For enterprises, it’s about long-term stability, security, and integrations.

Capability Matrix: Comparing Leading Vendors

CompanyCloud MigrationCI/CD & DevOpsAI IntegrationCompliance ExpertiseCost OptimizationBest Fit
Gart SolutionsSMB + Enterprise
Accenture⚠️ Partial⚠️ High-costEnterprise
IBM Consulting⚠️⚠️Enterprise
Deloitte⚠️Regulated Gov
HCLTech⚠️Enterprise
ModLogix⚠️ Partial⚠️⚠️ PartialSMB
Devox Software⚠️ Partial⚠️ PartialSMB
IntelliasMid-market
Cloudticity⚠️ PartialSMB Healthcare
TSRI⚠️⚠️Legacy mainframe

✅ = Strong capability
⚠️ = Available but limited
❌ = Not a focus

Final Thoughts: Choose the Right Fit, Not Just the Biggest Name

While Gart Solutions clearly leads the market for its blend of strategic agility, enterprise-grade delivery, and specialization in regulated environments, the best modernization partner depends on your company’s:

  • Size & budget
  • Industry-specific compliance needs
  • Technical stack
  • Modernization urgency

Enterprise clients may prioritize governance and scale, but SMBs need responsiveness and cost-efficiency. The good news? There are standout providers in both camps—and now, you’ve got the full picture to choose wisely.

Let’s work together!

See how we can help to overcome your challenges

FAQ

What is legacy application modernization and why is it important?

  • Legacy application modernization is the process of updating outdated software systems to modern technologies, architectures, and infrastructure.
  • It improves performance, security, and compatibility with cloud platforms and modern development tools.
  • Modernization helps reduce technical debt, lower operational costs, and enable digital transformation.
  • Organizations modernize to stay competitive, improve scalability, and meet compliance standards such as HIPAA, GDPR, or SOC 2.

What services does Gart Solutions offer for legacy application modernization?

  • Gart Solutions provides end-to-end modernization services, tailored for regulated industries and digital-first businesses.
  • Key offerings include legacy system refactoring, cloud migration, DevOps enablement, and CI/CD pipeline implementation.
  • They support replatforming, infrastructure-as-code (IaC), Kubernetes deployments, and hybrid cloud architecture.
  • Gart also provides cost optimization, post-modernization support, and compliance-ready architectures.

How do I choose the right legacy application modernization company?

  • Evaluate the vendor’s experience with your current technology stack (e.g., .NET, Java, COBOL).
  • Look for industry-specific expertise, especially in healthcare, finance, or media.
  • Ensure they offer DevOps and CI/CD capabilities for automated deployments and faster delivery.
  • Check for compliance support (HIPAA, GDPR) and security certifications like SOC 2 or ISO 27001.
  • Review real-world case studies to validate their success in similar projects.

What are the benefits of modernizing legacy systems with Gart Solutions?

  • Faster release cycles through CI/CD and DevOps integration.
  • Lower infrastructure costs through cloud-native migration and optimization.
  • Improved scalability and performance across applications and services.
  • Compliance-ready platforms designed for healthcare, finance, and regulated industries.
  • Custom modernization roadmaps tailored to business goals and technical requirements.

Which industries benefit most from legacy application modernization?

  • Healthcare – for HIPAA-compliant digital health platforms and infrastructure modernization.
  • Finance & Insurance – to meet security, compliance, and API enablement needs.
  • Media & Entertainment – for cloud-based scalability and cost optimization.
  • AI & SaaS platforms – to enable rapid feature deployment and microservices architectures.
  • Manufacturing & Logistics – to modernize legacy ERPs and integrate real-time data.

What is the typical timeline for a legacy application modernization project?

  • Modernization projects can vary based on complexity, architecture, and compliance needs.
  • Simple refactoring projects may take 2–3 months.
  • Full-stack replatforming or cloud migration often takes 4–9 months.
  • Enterprise-wide modernization initiatives can last 12 months or longer, depending on scale and systems involved.
  • Gart Solutions provides phased delivery for faster time-to-value and early wins.

What technologies are used in modernizing legacy applications today?

  • Cloud platforms like AWS, Azure, and Google Cloud for scalable infrastructure.
  • CI/CD tools such as Jenkins, GitLab CI, and ArgoCD for automated deployments.
  • Containerization with Docker and orchestration using Kubernetes.
  • Infrastructure as Code (IaC) tools like Terraform for reproducible environments.
  • Microservices architectures and API-first designs for modular scalability.

Is cloud migration the same as legacy application modernization?

  • No, they are related but not the same.
  • Cloud migration involves moving systems to a cloud environment, often “as-is.”
  • Modernization goes further—refactoring or rebuilding legacy apps to be cloud-native, scalable, and maintainable.
  • Modernization often includes redesigning architecture, enabling CI/CD, and improving UX/UI.
  • Gart Solutions offers both migration and modernization, tailored to business and technical goals.

How does DevOps improve legacy application modernization?

  • DevOps introduces automation, collaboration, and continuous delivery to modernization projects.
  • It reduces manual errors and deployment delays, allowing faster and safer releases.
  • CI/CD pipelines enable rapid testing and integration of new features.
  • Infrastructure automation (IaC) ensures consistent environments across development and production.
  • Gart Solutions integrates DevOps into every modernization roadmap for maximum agility.

Why is Gart Solutions a top choice for application modernization in regulated industries?

  • Gart specializes in HIPAA, SOC 2, and GDPR-aligned systems for healthcare, fintech, and AI platforms.
  • They implement security-first architectures with compliance embedded into the delivery process.
  • Proven case studies show success in building secure, modern, and scalable platforms.
  • Gart’s team holds certifications across AWS, Kubernetes, and DevOps toolchains.
  • Their consultative approach aligns modernization with both regulatory and business needs.
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