Open-source alternatives to OpenAI Codex
8 open-source projects that do what OpenAI Codex does. Picked or featured by Willet; numbers are from GitHub.
Last updated
| Project | What it does | Stars | License | Last commit | Self-hostable |
|---|---|---|---|---|---|
| General-purpose AI agent for coding and everyday tasks, local-first | 55.5k | Apache-2.0 | No | ||
| Terminal coding agent that works with dozens of model providers | 41.1k | MIT | No | ||
| Terminal coding agent harness built to run many agents at once | 21.1k | MIT | No | ||
| Desktop app for running teams of AI agents on everyday work tasks | 15.6k | Apache-2.0 | No | ||
| Asynchronous cloud coding agent that turns issues into pull requests | 11k | MIT | Yes | ||
| Forkable reference app for running background coding agents in the cloud | 5.9k | MIT | Yes | ||
| Terminal agent harness with persistent memory that learns over time | 3.7k | Apache-2.0 | No | ||
| Self-hosted background coding agent that works in cloud sandboxes | 3.4k | MIT | Yes |