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Open source alternatives to ChatGPT

AI chat assistant. 5 open source projects replace it, led by Ollama with 183k GitHub stars. Licenses and stars are read from GitHub.

  1. #1

    Ollama

    ★ 183k

    Run large language models locally.

    MITLast commit 2026-10-12View on GitHub ↗
  2. #2

    Open WebUI

    ★ 154k

    Self-hosted AI interface for Ollama and OpenAI-compatible APIs.

    Open WebUI License (BSD-3 based)Last commit 2026-10-12View on GitHub ↗
  3. #3

    LibreChat

    ★ 46k

    Multi-provider ChatGPT-style interface.

    MITLast commit 2026-10-12View on GitHub ↗
  4. #4

    jan

    ★ 45k

    Jan is an open source alternative to ChatGPT that runs 100% offline on your computer.

    NOASSERTIONLast commit 2026-10-12View on GitHub ↗
  5. #5

    open-spaces

    ★ 3.4k

    Free, open-source alternative to ChatGPT Spaces: a self-hostable AI workspace for shared pages and conversations.

    MITLast commit 2026-10-08View on GitHub ↗

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Part of the open source alternatives list. Dataset on GitHub.