Graph database

wikipedia:Graph database (GDB)

• Neo4j
• ArangoDB
• OrientDB
• Amazon Neptune (May 2018)
• GraphQL (Sep 2015)

See also

• Graph database: ArangoDB, Amazon Neptune, Neo4j, OrientDB
• NoSQL: Graph database, document-oriented database, Couchbase, Amazon DynamoDB, Amazon DocumentDB, MongoDB, FoundationDB
• Databases: Database management, SQL, NoSQL, Wide column, PostgreSQL, MariaDB, MySQL, Derby DB, MongoDB, Cassandra, SQLite, HSQL2, H2, RocksDB, Microsoft SQL Server, DB2, Oracle Database, Memcached, Berkeley DB, Collation, SingleStore, Amazon Aurora, Graph database, Amazon DynamoDB, PrestoDB, Cache hit ratio, ACID, WAL, ARIES, DBMS, OLTP, OLAP, Database Schema, CockroachDB, Tables, Views, Apache Druid, RDMS

https://aws.amazon.com/blogs/aws/amazon-neptune-generally-available/