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. 1
    OpenClaw ★ 394K

    An AI assistant that acts, not just answers

    MIT TypeScript pushed 2026-11-02 details →
  2. 2
    Hermes Agent ★ 260K

    Desktop AI agent with persistent memory across platforms

    MIT Python pushed 2026-11-02 details →
  3. 3
    Ollama ★ 186K

    Run open-source LLMs locally on your own machine

    MIT Go pushed 2026-11-02 details →
  4. 4
    ponytail ★ 183K

    Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.

    MIT JavaScript pushed 2026-10-29 details →
  5. 5

    Stable Diffusion web UI

    AGPL-3.0 Python pushed 2026-03-02 details →
  6. 6
    Dify ★ 160K

    Build and deploy AI agents and RAG pipelines visually

    NOASSERTION Python pushed 2026-11-02 details →
  7. 7
    Open WebUI ★ 158K

    One interface for every AI model you run or connect

    NOASSERTION Python pushed 2026-11-02 details →
  8. 8
    langchain ★ 149K

    The agent engineering platform.

    MIT Python pushed 2026-11-02 details →
  9. 9
    ComfyUI ★ 145K

    The most powerful and modular diffusion model GUI, api and backend with a graph/nodes interface.

    GPL-3.0 Python pushed 2026-11-02 details →
  10. 10
    graphify ★ 141K

    Turn any codebase, with its docs, SQL schemas, configs, and PDFs, into a queryable knowledge graph. A /graphify skill for Claude Code, Cursor, Codex, and Gemini

    Apache-2.0 Python pushed 2026-11-02 details →
method stars desc · snapshot from github api refresh nightly

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 393,747 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.