18 Best Legacy System Modernization Companies in India (2026)

Gilzor provides legacy app modernization services for products that need a more stable technical base, cleaner architecture, or a clearer path for future development. In the Indian market we understand the specific pressures around scaling fast while keeping costs in check and handling diverse technical environments that many local businesses face every day.

We approach modernization by focusing on restructuring rather than simple upgrades. This helps remove structural limits that build up in growing products and makes ongoing maintenance smoother in the long run. We work closely with the realities of Indian companies that balance rapid growth with the need for reliable systems.

Infosys focuses on areas like AI through its Topaz initiative that adapts foundation models for specific business needs. The company also promotes Cobalt for cloud strategies and works on intelligent experiences where data plays a key role in AI efforts. Infosys shares insights on topics such as emerging risks in insurance and AI imperatives.

Infosys collaborates with partners like AWS to help enterprises adopt generative AI. Recent efforts include unveiling an AI first value framework and maintaining a strong position in IT services branding. The company engages in various discussions around technology modernization and enterprise AI value.

HCLTech offers application modernization services that transform legacy systems into future-ready environments using GenAI-led capabilities. The approach addresses knowledge gaps in legacy estates and brings intelligence to decision making for modernization pathways. HCLTech integrates portfolio intelligence with technical debt optimization to support agile futures.

HCLTech emphasizes composable modernization along with cloud-aligned transformation and context engineering for better outcomes. The company provides AI-enabled digital cores and focuses on continuous modernization cycles that align technology with business priorities. This structured method helps reduce risks during legacy transformations.

Wipro provides legacy modernization services that optimize mainframe applications. The offerings include re-hosting, re-engineering and re-writing of application code with mainframe emulation products. Wipro deploys solutions to open systems such as Linux, Windows and Unix through its Save My MIPS and rules modernization approaches.

Wipro works on running optimized applications in modern environments while addressing mainframe specific needs. The service helps organizations move away from older setups toward more flexible platforms.

Cognizant helps companies modernize technology and reimagine processes while transforming experiences. The company builds AI capabilities and focuses on bridging AI to practical impact in business operations. Cognizant supports various sectors through technology engineering that anticipates changes.

Cognizant drives innovation with decision AI and maintains an innovation network for enterprise value. Recent activities include acquisitions that expand AI infrastructure and managed services along with recognitions in digital services. The approach centers on scaling intelligence across systems.

Persistent works on software product modernization by leveraging cloud-native architectures and technologies. The company addresses challenges in revenue growth and product innovation through re-imagining product experiences. Persistent applies MACH architectures including microservices and API-first designs along with containerization expertise.

Persistent offers solutions like ExtenSURE for legacy product portfolios and supports container enablement with Kubernetes. The company includes site reliability engineering and micro frontends in its modernization work while refactoring monoliths to microservices.

SparxIT handles legacy software modernization by transitioning data to advanced and efficient applications. The company follows a structured approach toward modernizing legacy systems with various services tailored for different business types. SparxIT focuses on future-proofing through agile and modern technologies.

SparxIT delivers application modernization consulting along with software re-engineering and code refactoring. The company manages data modernization, API upgradation and technology updates while supporting DevOps practices and UI/UX improvements for better user interactions.

Soft Suave delivers legacy application modernization services aimed at updating existing apps with newer approaches. The company examines legacy systems and recommends options such as re-coding or re-platforming after detailed investigation. Soft Suave follows processes that focus on business requirements first while working to reduce costs and limit disruptions during updates.

Soft Suave supports application re-hosting as a safe way to move to modern infrastructure without major changes to core logic. The company also handles re-architecture and creates strategic roadmaps for modernization efforts. Remote developers coordinate across time zones to keep projects moving steadily.

Damco provides legacy modernization services that update systems for improved efficiency and future readiness. The company works on application and system modernization along with data modernization and cloud migration. Damco carries out processes with attention to minimal disruption while reusing business logic where possible.

Damco supports infrastructure upgrades and enterprise security in modernization projects. The approach includes digital engineering elements to align with business requirements. Organizations receive support across various industries through these modernization activities.

TechAhead offers legacy app modernization solutions with an emphasis on AI-powered elements and agile DevOps practices. The company examines current technology setups using analytics to identify gaps and create custom plans. TechAhead transforms systems into microservices architectures for better management and scalability.

TechAhead supports cloud-native moves to platforms like AWS, Azure or GCP with multi-cloud options. The company handles cross-platform compatibility and UI/UX redesigns while addressing security and compliance needs. This work aims at delivering flexible and performant applications.

Radixweb turns aging systems into modern solutions through legacy modernization work. The company applies approaches tailored to digital success and focuses on updating legacy environments. Radixweb delivers modernization that addresses specific business contexts in its projects.

Radixweb handles various aspects of application updates and system transformations. The efforts center on creating high-performing setups from older foundations without unnecessary complications.

Appinventiv works on legacy application modernization services to transform older setups. The company supports updates that bring systems in line with current expectations and technologies. Appinventiv addresses challenges associated with outdated applications through structured modernization.

Appinventiv provides pathways for organizations dealing with legacy constraints. The services help move toward more adaptable and integrated software environments.

Suntec delivers legacy app modernization services that shift aging systems to agile and cloud-native platforms. The company offers options such as modular design, CI/CD pipeline rebuilds and tech stack modernization. Suntec handles re-platforming to cloud environments and re-architecting to microservices.

Suntec performs software refactoring to reduce technical debt and database modernization to newer platforms. The company supports cloud migration along with UI/UX updates and API development for better connectivity. These services cover a range of modernization pathways based on business needs.

Hexaware works with digital and software areas to create differentiated customer experiences. The company provides cloud solutions that support journeys toward future setups and focuses on data and analytics for AI-enabled decisions. Hexaware handles digital IT operations along with enterprise platform services and business process services.

Hexaware incorporates artificial intelligence in value-first solutions and supports global capability centers. The company assists with transitions to product-based approaches and seamless cloud migration while unlocking potential through data and AI. Hexaware also improves infrastructure management and optimizes business processes in its offerings.

Mphasis applies engineering principles with design and architecture to deliver next-generation offerings. The company blends domain expertise with technology as an AI-led platform-driven entity that helps enterprises modernize and infuse AI. Mphasis uses its NeoIP platform along with Ontosphere knowledge base to drive intelligent engineering.

Mphasis adopts a Front2Back transformation framework that leverages cloud and cognitive elements for personalized experiences. The company focuses on service transformation and innovation while maintaining an emphasis on customer-centric approaches. Mphasis addresses modernization through various offerings that include next-gen data and experience design.

Cygnet simplifies complexity in digital possibilities through digital engineering and cloud transformation. The company engages in quality engineering along with data analytics and AI while providing managed IT services. Cygnet develops in-house products and delivers end-to-end digital transformation powered by AI.

Cygnet operates its COSMOS framework that fosters collaboration through co-ideate, co-create, co-innovate and co-evolve phases. The company partners on projects such as cloud-native architectures and maintains a focus on innovation in areas like hyperautomation. Cygnet supports various digital initiatives since its start in IT and product engineering.

Sparkout provides legacy system modernization as part of its technology offerings in India. The company updates outdated systems to create scalable and future-ready platforms that align with business needs. Sparkout works on modernization projects that address workflows and automation tasks.

Sparkout delivers approaches suited for different scales of systems and focuses on practical updates that fit current trends. The company supports enterprises in moving legacy setups forward without losing core functionality during transitions.

Raybiztech delivers solutions in ERP, CRM, data, automation, integration and AI areas that support future-ready setups. The company works across industries such as banking, finance, healthcare and manufacturing while focusing on digital transformation efforts. Raybiztech integrates technologies like D365, MS Fabric and Boomi in its approaches.

Raybiztech emphasizes innovation through cutting-edge technologies and strategies that transform business processes. The company maintains a partner hub for collaboration and drives projects that address operational needs in various sectors. Raybiztech applies AI in areas like streamlining operations and enhancing experiences in financial contexts.