ragflow alternatives

infiniflow/ragflow (92k stars, +98 this week): RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a… Why it matters: relevant for grounding LLMs in your own data.

Below are 4 other RAG / vector repos tracked by OSS Radar that share at least two GitHub topics with ragflow, ordered by how many topics overlap, then by stars gained in the last 7 days. Topic overlap means a similar problem space, not a drop-in replacement, so check each project's README.

1. 1. NirDiamant/RAG_Techniques

   +56/wkest.

   A collection of runnable notebook tutorials covering techniques for building Retrieval-Augmented Generation (RAG) systems. Why it matters: relevant for grounding LLMs in your own data.

   30k stars · Jupyter Notebook · shared topics: ai, rag, retrieval-augmented-generation

2. 2. HKUDS/DeepTutor

   +280/wkest.

   DeepTutor: Lifelong Personalized Tutoring. https://deeptutor.info/. Why it matters: relevant for grounding LLMs in your own data.

   41k stars · Python · shared topics: ai-agents, rag

3. 3. opendataloader-project/opendataloader-pdf

   +63/wkest.

   PDF Parser for AI-ready data. Automate PDF accessibility. Open-source. Why it matters: relevant for grounding LLMs in your own data.

   30k stars · Java · shared topics: ai, rag

4. 4. HKUDS/LightRAG

   +42/wkest.

   [EMNLP2025] LightRAG: Simple and Fast Retrieval-Augmented Generation. Why it matters: relevant for grounding LLMs in your own data.

   40k stars · Python · shared topics: rag, retrieval-augmented-generation

More: all trending RAG / vector repos · compare ragflow with the top 2