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
#2TriliumNext/Trilium
Build your personal knowledge base with Trilium Notes
#3HKUDS/LightRAG
[EMNLP2025] "LightRAG: Simple and Fast Retrieval-Augmented Generation"
#4dgraph-io/dgraph
high-performance graph database for real-time use cases
#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.
#6topoteretes/cognee
Knowledge Engine for AI Agent Memory in 6 lines of code