JanusGraph: an open-source, distributed graph database

A large-scale entity and relation database supporting aggregation of properties

Awesome Procedures On Cypher for Neo4j - codenamed "apoc"                     If you like it, please ★ above ⇧            

A bunch of import/export tools for the neo4j-shell

Match tens of thousands of regular expressions within milliseconds - Java bindings for Intel's hyperscan 5

Mazerunner extends a Neo4j graph database to run scheduled big data graph compute algorithms at scale with HDFS and Apache Spark.

Utilities to compact, copy, fix, analyse Neo4j stores

Java importer skeleton for complicated, business-logic-heavy high-performance Neo4j imports directly from SQL databases, CSV files, etc.