utopia alternatives

deeplethe/utopia (8.3k stars, +63 this week): World's first open-source enterprise world model. 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 utopia, 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. HKUDS/LightRAG

   +35/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: graphrag, knowledge-graph, llm, rag

2. 2. NirDiamant/RAG_Techniques

   +49/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: llm, rag, semantic-search

3. 3. microsoft/graphrag

   +28/wkest.

   A modular graph-based Retrieval-Augmented Generation (RAG) system. Why it matters: relevant for grounding LLMs in your own data.

   36k stars · Python · shared topics: graphrag, llm, rag

4. 4. FalkorDB/FalkorDB

   +217/wkest.

   A super fast Graph Database uses GraphBLAS under the hood for its sparse adjacency matrix graph representation. Why it matters: relevant for grounding LLMs in your own data.

   9.6k stars · Rust · shared topics: graphrag, knowledge-graph

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