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Graph Databases - Markdown

Graph databases are database management systems that represent relationships between data using nodes (vertices) and edges. Compared to relational databases, they excel at querying complex many-to-many relationships and deep hierarchical structures. They are widely used for social network analysis, recommendation systems, fraud detection, and knowledge graph construction. Representative products include Neo4j, ArangoDB, and Amazon Neptune.

database graph NoSQL Neo4j ArangoDB knowledge graph data modeling

| code | slug | name | description | license | queryLanguage | ranking |
| --- | --- | --- | --- | --- | --- | --- |
| 01 | neo4j | Neo4j | Leader in native graph databases. Uses Cypher query language. | GPLv3 (Community), Commercial (Enterprise) | Cypher | 1 |
| 02 | azure-cosmos-db | Microsoft Azure Cosmos DB | Microsoft's fully managed multi-model database service. | Proprietary (Cloud Service) | Gremlin | 2 |
| 03 | aerospike | Aerospike | High-performance multi-model database. Supports Apache TinkerPop. | Proprietary | Gremlin | 3 |
| 04 | arangodb | ArangoDB | Multi-model database integrating graph, document, and key-value stores. | Apache 2.0 | AQL | 4 |
| 05 | virtuoso | Virtuoso | OpenLink Software's multi-model database. Supports RDF. | GPL/Commercial | SPARQL | 5 |
| 06 | orientdb | OrientDB | Java-based multi-model database. Fast and flexible. | Apache 2.0 | SQL-like | 6 |
| 07 | graphdb | GraphDB | Ontotext's enterprise RDF database. Semantic Web ready. | Commercial | SPARQL | 7 |
| 08 | amazon-neptune | Amazon Neptune | AWS fully managed graph database service. | Proprietary (Cloud Service) | Gremlin, SPARQL | 8 |
| 09 | nebulagraph | NebulaGraph | Distributed open-source graph database designed for large-scale graphs. | Apache 2.0 | nGQL | 9 |
| 10 | memgraph | Memgraph | In-memory graph database. Achieves low latency. | BSL/Apache 2.0 | Cypher | 10 |