Refactorly is a mainframe modernization solution that treats legacy code as structured data rather than a migration obstacle, using RAG architecture and a multi-agent system to scan embedded business logic, map dependencies, and generate updated code for developer review before any transformation begins. A three-layer platform architecture separates knowledge graph construction, AI agent reasoning across workload classification and compliance validation, and phased migration control with visibility into service readiness and dependency risks throughout the program.

Corsac Technologies presented one of the leading mainframe migration solutions that addresses both code symptoms and the development process failures behind them: undocumented APIs, spaghetti architecture, and delivery inertia that accumulates around aging systems. RAG architecture combined with Multi-Agent Swarm analysis converts legacy source code into a searchable dataset, surfacing dependencies and architectural bottlenecks before refactoring begins. DevSecOps and CI/CD pipelines are implemented alongside code changes, covering HIPAA, SOC2, GDPR, and ISO compliance throughout each transformation phase.

Kyndryl operates the largest mainframe infrastructure globally by MIPS footprint and delivers mainframe modernization solutions through Kyndryl Bridge. It’s an AI-powered open integration platform that applies AIOps to automate management tasks, detect data drift, and surface next-best-action recommendations from operational data across mainframe and cloud environments in a unified environment. Hyperscaler partnerships with Microsoft, Google Cloud, and AWS support migration paths from COBOL conversion and hybrid cloud integration through to full off-mainframe decommissioning.

Kumaran's mainframe modernization solution is built on NxTran, a proprietary transformation tool developed in-house to automate COBOL-to-Java and COBOL-to-Angular conversion, with BMS Map files converted to HTML5 and Angular presentation layers, JCL batch programs mapped to Spring Batch with Quartz Scheduler, and COBOL restructured into Spring REST Services. Over 2,000 migrations completed across Fortune companies and government agencies across 30+ years provide a traceable delivery benchmark for rehost, refactor, and re-engineer to microservices programs.

IBM's mainframe rehosting solutions are built on watsonx Code Assistant for Z, a purpose-built AI platform trained on a fine-tuned large language model that covers COBOL, PL/I, JCL, REXX, and Assembler. The platform follows a structured five-phase workflow: understand, refactor, transform, validate, and explain, with agentic AI coordinating dependency analysis, impact assessment, code generation, and behavioral validation through runtime comparison of legacy and modernized outputs.

Rocket Software approaches mainframe modernization through hybrid IT unification rather than staged platform exit. Rocket EVA brings conversational AI to operational diagnostics, allowing teams to query and interact with core systems without direct infrastructure access. The 2024 acquisition of OpenText's Application Modernization and Connectivity business expanded the platform's scope by 60% in revenue terms, extending COBOL modernization coverage across Eclipse and VS Code IDEs with CI/CD integration and GenAI-assisted developer onboarding.

CGI's mainframe modernization solutions are built on the proprietary M8 automated tooling environment, which has delivered migrations to Unix and Linux targets within six to twelve months across documented enterprise engagements. The ReFrame discovery tool maps the full mainframe landscape and classifies workloads by complexity and business value before migration sequencing begins. Infrastructure cost reductions of 50-70% are cited across CGI's delivery record, with individual client cases reaching 90% platform maintenance savings.

Wipro's mainframe modernization solutions apply GenAI across the transformation scope through FullStride Cloud and the Capco partnership, covering COBOL business logic extraction, security vulnerability detection via semantic code analysis, and in-place COBOL co-pilot optimization. The proprietary AI PEDIA tool generates IT-persona-specific documentation from existing COBOL applications, while IBM watsonx Code Assistant for Z handles COBOL-to-Java conversion with functional parsing into manageable service units.

Accenture's mainframe modernization solutions combine GenWizard, its proprietary AI platform covering 30+ programming languages, with AWS Transform's agentic analysis of IBM mainframe environments and multi-agent orchestration that extracts industry-specific business logic, including financial calculation routines and regulatory reporting patterns. Migration paths range from workload offloading and read replication to full cloud replatforming, with a "Mainframe Zero" approach structured around executive governance, phased funding models, and compliance continuity throughout the transformation program.

Luxoft's mainframe modernization solutions cover COBOL, Assembler, IMS, JCL, and CA Gen conversion through proprietary compilers and code converters developed in-house, specifically for environments where standard tooling does not handle transformation edge cases. CI/CD pipelines and automated testing are built into the delivery scope, and cloud modernization pathways are available for workloads where off-mainframe migration produces measurable operational advantage.

HCLTech addresses mainframe modernization at enterprise scale through an incremental "business capability first" approach that sequences workloads by function rather than system, preserving investment in existing mainframe assets while reducing regression risk during each transformation phase. Proprietary accelerators and AI-driven code analysis reduce manual assessment effort across rehosting, replatforming, and refactoring programs, with hybrid cloud modernization integration supported throughout.