Open source alternatives to Claude Code

Open source alternatives to Claude Code, ranked by GitHub stars and freshness.

5 open-source alternatives in the index, ranked by GitHub stars and freshness.

Paul Gauthier

Terminal-first AI pair programmer. Edits files in your repo, commits with sensible messages, runs your tests.

Best for: Engineers who live in the terminal and want a tight, scriptable AI loop

GitHub / Microsoft

The original AI pair programmer, now with Agent Mode, Workspaces, and multi-model selection.

Best for: Large orgs already on GitHub Enterprise

OpenAI

OpenAI's coding agent surface: terminal CLI for local work, cloud agent for parallel autonomous tasks.

Best for: Teams on the OpenAI Enterprise side of the fence

All Hands AI

Open-source autonomous coding agent platform. Spins up a sandboxed dev environment, ships PRs end to end.

Best for: Teams who want a real autonomous coding agent and can run their own infra

Codeium

Codeium's IDE-with-an-agent. Cascade flow combines deep context with autonomous multi-file work.

Best for: Engineers who want continuous agent context, not chat-and-snippet