Open-source alternatives to Perplexity
4 open-source projects that do what Perplexity does. Picked or featured by Willet; numbers are from GitHub.
Last updated
| Project | What it does | Stars | License | Last commit | Self-hostable |
|---|---|---|---|---|---|
| Agent skill that researches the past month of social posts on any topic | 64.9k | MIT | No | ||
| Self-hosted AI answer engine that searches the web and cites sources | 37.5k | MIT | Yes | ||
| Self-hosted research assistant that writes cited reports with local LLMs | 9.4k | MIT | Yes | ||
| Deep research pipeline that runs inside Claude Code or Codex | 3.9k | MIT | No |