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cayleygraph/cayley

An open-source graph database
Source code at GitHub https://cayley.io
cayleygraph/cayley.json
{
  "createdAt": "2014-06-05T18:49:41Z",
  "defaultBranch": "master",
  "description": "An open-source graph database",
  "fullName": "cayleygraph/cayley",
  "homepage": "https://cayley.io",
  "language": "Go",
  "name": "cayley",
  "pushedAt": "2025-11-22T03:55:24Z",
  "stargazersCount": 15002,
  "topics": [
    "cayley",
    "go",
    "graph",
    "graph-database",
    "linked-data"
  ],
  "updatedAt": "2025-11-25T14:31:11Z",
  "url": "https://github.com/cayleygraph/cayley"
}

Tests

Cayley is an open-source database for Linked Data. It is inspired by the graph database behind Google’s Knowledge Graph (formerly Freebase).

Get it from the Snap Store

Documentation

Section titled “Documentation”

Features

Section titled “Features”
  • Built-in query editor, visualizer and REPL
  • Multiple query languages:
    • [Gizmo]!(./docs/gizmoapi.md): query language inspired by Gremlin
    • [GraphQL]!(./docs/graphql.md)-inspired query language
    • [MQL]!(./docs/mql.md): simplified version for Freebase fans
  • Modular: easy to connect to your favorite programming languages and back-end stores
  • Production ready: well tested and used by various companies for their production workloads
  • Fast: optimized specifically for usage in applications

Performance

Section titled “Performance”

Rough performance testing shows that, on 2014 consumer hardware and an average disk, 134m quads in LevelDB is no problem and a multi-hop intersection query — films starring X and Y — takes ~150ms.

Community

Section titled “Community”