Swimm.io pairs deterministic code analysis with AI agents and senior engineers to modernize and document enterprise legacy codebases.
What it does
Swimm.io offers enterprise modernization services that combine static code analysis, AI agents, and human engineers to migrate legacy systems and build a validated, queryable knowledge base of a company's code. Services include extracting business logic into APIs, creating an AI 'agentic context layer' for tools like Copilot and Claude Code, and executing large migrations such as .NET/Java modernization or monolith-to-microservices splits.
Core features
Cross-repo dependency and dead-code mapping via static analysis
AI agents applying verified modernization patterns at scale
Expert engineer validation of every automated change
Fixed-price, staged engagement model with visible progress tracking
Mainframe language support including COBOL, JCL, and PL/I
On-premise, air-gapped deployment with customer-managed LLMs
Best for
→Financial institutions modernizing mainframe applications
→Engineering teams splitting monoliths into microservices
→Companies building AI-ready knowledge bases for coding assistants
→Enterprises needing audited, compliance-ready migration projects
Reviews
Big-picture takes: what it's for and whether it delivers. High-engagement YouTube videos — not sponsored.
Tutorials
Step-by-step: exactly how to get things done with it.