Swimm is an AI-powered application understanding platform that extracts business rules, dependencies, and architecture from complex legacy codebases, especially mainframes, for teams accelerating modernization projects.

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🚀 Overview

Swimm is an Application Understanding Platform designed to tackle the challenges of legacy code, particularly in mainframe systems. It uses AI-powered static analysis to automatically reverse engineer applications, building a living knowledge base that reveals hidden business logic, dependencies, and architecture without manual effort.

This project solves the problem of opaque legacy codebases where business rules are buried in boilerplate, making modernization slow, risky, and expensive. Manual documentation takes thousands of hours and is often inaccurate. Swimm accelerates timelines by 10x, de-risks initiatives, and frees up budgets.

It's built for CIOs looking to modernize faster, product and analyst teams creating specs without mainframe experts, and developers needing to understand code connections quickly. Swimm was created to empower teams controlling their mainframe future with trusted, hallucination-free insights.

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✨ Key Features

• AI-powered static analysis: Builds a knowledge base from code, revealing architecture, patterns, and hidden logic—accurate and complete coverage without hallucinations.
• Living inventory: Programs, modules, and dependencies with explanatory names and auto-generated diagrams for user screens, variables, and job flows.
• Business logic extraction: Surfaces rules for non-technical stakeholders and generates customizable specs for migration planning.
• Secure deployment: Cloud or on-premise, SOC2 and ISO 27001 compliant; supports custom LLMs.
• Upcoming: Further AI enhancements for enterprise-scale mainframe modernization.

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🛠 Tech Stack

• Frontend: React (components in swimm-ui repo)
• Backend: Advanced deterministic code analysis with AI
• Integrations: VS Code extension, GitHub App
• Database: Not publicly specified
• Auth: Enterprise-grade security
• Hosting: Secure cloud and on-premise deployments

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👥 Who Is This For?

This project is useful for:

• Developers who want to understand complex legacy code and its connections instantly
• Teams looking for accelerated mainframe modernization and spec creation
• CIOs and enterprises building modern architectures from legacy systems

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📸 Screenshots / Demo

• Live demo: Request at https://swimm.io/request-demo
• GitHub: https://github.com/swimmio

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🔥 Project Status

• 🟢 Actively building

Last updated: 2026-03-24

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❓ FAQ

Is this project free?

Paid / Enterprise (Custom pricing based on lines of code; demo available, no public free tier currently listed)

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Is the source code available?

No — Core platform is proprietary, but some UI components and integrations available at https://github.com/swimmio

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Can I contribute?

Check open repositories on GitHub (https://github.com/swimmio) for issues and PRs; for product feedback, request a demo or contact via website.

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📬 Contact & Links

• Website: https://swimm.io
• GitHub: https://github.com/swimmio
• Twitter/X: https://x.com/swimm_io
• Email: Request demo form on site

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