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RAG and app builders.

Document Q&A workspaces and visual LLM app studios. Chat with your files, ship a workflow UI, keep the models you already run.

  1. Rank 1. DifyVisual LLM app builder with RAG, agents, and a backend.GitHub stars: 155.5k
  2. Rank 2. RAGFlowOpen-source RAG engine with deep document understanding.GitHub stars: 90.6k
  3. Rank 3. AnythingLLMDesktop and server chat with documents, agents, and many backends.GitHub stars: 66k
  4. Rank 4. KhojSelf-hostable AI second brain that searches your notes, docs, and the web.GitHub stars: 37.3k
  5. Rank 5. LlamaIndexThe MIT Python framework for building document ingestion and RAG pipelines.GitHub stars: 52.1k
  6. Rank 6. GraphRAGMicrosoft’s MIT library for graph-based RAG over whole document corpora.GitHub stars: 36k
  7. Rank 7. PrivateGPTApache-2.0 local RAG API layer for chatting with private documents offline.GitHub stars: 57.5k
  8. Rank 8. FlowiseLow-code node UI on top of LangChain-style flows.GitHub stars: 55.5k
  9. Rank 9. QuivrSecond-brain RAG server with an API and client libraries for your own app.GitHub stars: 39.5k
  10. Rank 10. SurfSenseOpen NotebookLM-style researcher that crawls the live web and chats with your files.GitHub stars: 16.1k
  11. Rank 11. kotaemonApache-2.0 document chat with visible citations and RAG evaluation built in.GitHub stars: 25.7k