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Open Source Enterprise Knowledge Search using CSS

A curated collection of the best open source aI-powered search and RAG over a company's own documents and knowledge. using CSS.

Chat with your documents using any LLM, fully private
  • Stars

    67,343
  • Last commit

    13 hours ago
  • License

    MIT
A desktop and self-hostable AI app for chatting with documents, running local LLMs, and using AI agents without writing code or creating an account.

Open Source Alternative to:

Unified AI-powered enterprise search across company data
  • Stars

    32,601
  • Last commit

    8 hours ago
  • License

    MIT
An open-source platform that connects to 40+ apps to provide intelligent search and AI assistance across all company information

Open Source Alternative to:

Build powerful AI knowledge bases with ease
  • Stars

    29,874
  • Last commit

    6 hours ago
  • License

    Unknown
FastGPT is a free, open-source platform for creating AI-powered knowledge bases with data processing, model invocation, and visual workflows.

Open Source Alternative to:

Privacy-first knowledge base with any AI model you choose
  • Stars

    16,534
  • Last commit

    18 hours ago
  • License

    Apache-2.0
Self-hostable NotebookLM alternative that lets teams build searchable knowledge bases from diverse sources, with support for any LLM and no data limits.

Open Source Alternative to:

Enterprise workplace AI with data you own and control
  • Stars

    3,842
  • Last commit

    6 hours ago
  • License

    Apache-2.0
Self-hostable enterprise AI platform that unifies business data across apps, powers a knowledge graph for cited answers, and lets teams build AI agents across their stack.

Open Source Alternative to:

Ask once, get answers across every document
  • Stars

    13
  • Last commit

    4 months ago
  • License

    AGPL-3.0
Upload files, ask questions, and get AI‑backed answers with citations. Compare, synthesize, and export results for teams and polished outputs.

Open Source Alternative to: