Best Open Source knowledge graph Libraries

A curated list of the most popular GitHub repositories tagged with knowledge graph. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.

#1logseq/logseq

A privacy-first, open-source platform for knowledge management and collaboration. Download link: http://github.com/logseq/logseq/releases. roadmap: https://discuss.logseq.com/t/logseq-product-roadmap/34267

41,145Clojure

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#2TriliumNext/Trilium

Build your personal knowledge base with Trilium Notes

34,705TypeScript

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#3HKUDS/LightRAG

[EMNLP2025] "LightRAG: Simple and Fast Retrieval-Augmented Generation"

28,485Python

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#4dgraph-io/dgraph

high-performance graph database for real-time use cases

21,618Go

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#5memvid/memvid

Memory layer for AI Agents. Replace complex RAG pipelines with a serverless, single-file memory layer. Give your agents instant retrieval and long-term memory.

13,175Rust

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#6topoteretes/cognee

Knowledge Engine for AI Agent Memory in 6 lines of code

12,449Python

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