Build software better, together

surrealdb / surrealdb

A scalable, distributed, collaborative, document-graph database, for the realtime web

sql database web serverless nosql devtools distributed database-as-a-service developer-tools graph-database distributed-database document-database realtime-database backend-as-a-service cloud-database surreal surrealdb iot-database

Updated Sep 1, 2026
Rust

topoteretes / cognee

Sponsor

Star

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 engine.

open-source ai knowledge knowledge-graph help-wanted graph-database memory-management ai-agents contributions-welcome cognitive-architecture good-first-issue good-first-pr vector-database graph-rag ai-memory cognitive-memory agent-skills agent-memory context-engineering

Updated Sep 1, 2026
Python

neo4j / neo4j

Star

Graphs for Everyone

database neo4j graph nosql graph-database graphdb cypher

Updated Aug 24, 2026
Java

cayleygraph / cayley

Star

An open-source graph database

go graph linked-data graph-database cayley

Updated Aug 27, 2026
Go

🥑 ArangoDB is a native multi-model database with flexible data models for documents, graphs, and key-values. Build high performance applications using a convenient SQL-like query language or JavaScript extensions.

database nosql key-value graph-database graphdb distributed-database document-database multi-model arangodb

Updated Sep 1, 2026
C++

vesoft-inc / nebula

Star

A distributed, fast open-source graph database featuring horizontal scalability and high availability

distributed-systems database big-data cpp graph raft scalability distributed knowledge-graph graph-database graphdb knowledge-base hacktoberfest nebula nebula-graph nebulagraph graphrag

Updated May 18, 2026
C++

HelixDB / helix-db

Star

HelixDB is an OLTP graph-vector database built in Rust on Object Storage.

rust cli database ai vector databases rust-lang graph-database helix rust-crate rag vector-database vectorsearch vector-db helixdb

Updated Aug 31, 2026
Rust

JanusGraph / janusgraph

Star

JanusGraph: an open-source, distributed graph database

elasticsearch cassandra graph solr hbase graph-database gremlin graphdb tinkerpop bigtable

Updated Aug 18, 2026
Java

FalkorDB / FalkorDB

Star

A super fast Graph Database uses GraphBLAS under the hood for its sparse adjacency matrix graph representation. Our goal is to provide the best Knowledge Graph for LLM (GraphRAG).

database devtools knowledge-graph database-as-a-service developer-tools graph-database realtime-database cloud-database graphrag

Updated Sep 1, 2026
Rust

orientechnologies / orientdb

Sponsor

Star

OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID Transactions, Full-Text indexing and Reactive Queries.

fast performance sql database nosql dbms multi-master orientdb graph-database document-database graph-store multi-model-dbms

Updated Sep 1, 2026
Java

vitali87 / code-graph-rag

Sponsor

Star

The ultimate RAG for your monorepo. Query, understand, and edit multi-language codebases with the power of AI and knowledge graphs

Updated Sep 1, 2026
Python

apache / age

Star

Graph database optimized for fast analysis and real-time data processing. It is provided as an extension to PostgreSQL.

analytics postgresql graph-database graphdb postgresql-extension multi-model-dbms agensgraph age-database

Updated Aug 28, 2026
C

FlowElement-xinliuyuansu / m_flow

Star

A bio-inspired cognitive memory engine — a new paradigm for Graph RAG.

python mcp knowledge-graph graph-database memory-engine long-term-memory rag episodic-memory vector-search semantic-memory llm ai-reasoning agentic-ai agent-memory

Updated Aug 3, 2026
Python

memgraph / memgraph

Star

High-performance open-source in-memory graph database for GraphRAG, AI memory, agentic AI, and real-time graph analytics. Cypher-compatible, built in C++.