Open source graph-database projects
Every project in the registry tagged graph-database, ranked by real GitHub adoption.
Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions with a self-hosted knowledge graph engi
Graphs for Everyone
An open-source graph database
A distributed, fast open-source graph database featuring horizontal scalability and high availability
Graph database built for GraphRAG and multi-tenant AI apps
Unify vector search and graph traversals in one database
The ultimate RAG for your monorepo. Query, understand, and edit multi-language codebases with the power of AI and knowledge graphs
OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distribut
Graph database optimized for fast analysis and real-time data processing. It is provided as an extension to PostgreSQL.
High-performance graph computing for scalable data analysis
A bio-inspired cognitive memory engine — a new paradigm for Graph RAG.
TerminusDB is a distributed, collaborative database designed for building, sharing, versioning, and reasoning on structured data.
A graph database that supports more than 100+ billion data, high performance and scalability (Include OLTP Engine & REST-API & Backends)
Search and browse documents and data; find the people and companies you look for.
Apache TinkerPop - a graph computing framework
SPARQL graph database
Connect your company's data, let an agent draft an ontology over it, and load it into HelixDB as one graph you can explore and ask questions of. Hosted at found
Lakehouse native graph engine with git-style workflows
AgensGraph, a high performance transactional graph database based on PostgreSQL
An active model wrapper for the Neo4j Graph Database for Ruby.
Build fast and accurate GenAI apps with GraphRAG SDK at scale 🌟
Build complete web apps with integrated graph database
Long-term memory for AI assistants. Graph + vector store that recalls decisions, relationships, and context across sessions.
Scalable graph analytics database powered by a multithreaded, vectorized temporal engine, written in Rust
Multi-Modal Database replacing MongoDB, Neo4J, and Elastic with 1 faster ACID solution, with NetworkX and Pandas interfaces, and bindings for C 99, C++ 17, Pyth
Infrahub is a graph-based data management platform with built-in version control, CI workflows, peer review, and API access. It’s purpose-built to power reliabl
A SQLite extension that adds graph database capabilities with Cypher query language support and built-in graph algorithms.
Related tags
Frequently asked questions
How many open source graph-database projects are there?
This registry tracks 27 projects tagged graph-database, with 144,270 GitHub stars between them. The most-adopted is cognee at 33,012 stars.
Are these graph-database projects free to use?
Yes — 24 of the 27 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which graph-database project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these graph-database projects still maintained?
26 of the 27 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.