opencypher

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

A graph database as a Redis module

Library extending Jupyter notebooks to integrate with Apache TinkerPop, openCypher, and RDF SPARQL.

React-based web application that enables users to visualize both property graph and RDF data and explore connections between data without having to write graph queries.

Rust graph-vector database: OpenCypher (99.9% of evaluated TCK scenarios pass), vector search, graph algorithms, RESP + HTTP. LDBC SNB Interactive and BI complete; 1B edges on one machine.

Entity graphs, OSINT data mining, and plugins. Connect unstructured and public data for transformative insights. This is the community plugins registry. 🖥️ (Electron version)

OpenCypher to SQL Mapper

This tool transpiles openCypher graph query language to a relational database query language. This project publishes a T-SQL for Microsoft SQL Server as the target query language.

A Neo4j-like graph database with openCypher and Bolt protocol support, multiple graphs, and replication.

High-performance Knowledge Graph engine for AI, LLMs, and GraphRAG — built for the next generation of intelligent applications.

An embedded, openCypher-compatible graph workspace for Python & Node.js

Incremental view maintenance for openCypher graph queries.

The JDBC connector for Nebula Graph.

Metropolitan Transport Network from São Paulo mapped in a NoSQL graph database.

Amazon Neptune JDBC Driver by Amazon Web Services

TextGraphs + LLMs + graph ML for entity extraction, linking, ranking, and constructing a lemma graph

Distributed Graph Database Server

A query builder for Cypher written in PHP

An embedded in-memory openCypher implementation for Go

Ontology-driven codebase indexer and query service. Parses C#, TypeScript/JS, Go, Python, and SQL into an embedded graph database. Exposes Model Context Protocol (MCP) tools for AI agents to perform deep static analysis, cross-project call-graph tracing, and data lineage mapping.