best-of ranking · updated nightly
Best Open Source AI & Machine Learning Tools
Ranked by GitHub stars — actual adoption, not editorial taste. All 10 are free, open source and self-hostable; license and last activity on every entry.
- 1
- 2 Hermes Agent ★ 246K
Desktop AI agent with persistent memory across platforms
- 3
- 4
- 5 Open WebUI ★ 152K
One interface for every AI model you run or connect
- 6
- 7
- 8
- 9 generative-ai-for-beginners ★ 120K
21 Lessons, Get Started Building with Generative AI
- 10
last updated nightly · ranking method: github stars, live-tracked
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Frequently asked questions
What is the best open source AI & Machine Learning tool in 2026?
OpenClaw leads the ranking with 389,982 GitHub stars, ahead of Hermes Agent. Rankings use live GitHub star counts, refreshed nightly.
How is this list of AI & Machine Learning tools ranked?
By GitHub stars — a proxy for adoption and community size. Each entry also shows its licence, primary language and last commit date, so you can judge maintenance activity rather than trusting the ranking alone.
Are the best AI & Machine Learning tools free?
Every project on this list is open source and free to self-host. Some also offer paid managed hosting, but the software itself carries no licence fee.