Neo4j Community API

Graph database

org.neo4j.graphdb	The graph database API used by Neo4j.
org.neo4j.graphdb.event	Event framework.
org.neo4j.graphdb.index	Integrated API for node and relationship indexing.
org.neo4j.graphdb.traversal	Traversal framework.
org.neo4j.kernel	Implementation for embedding a Neo4j graph database in an application.
org.neo4j.kernel.info

Index

org.neo4j.index.lucene

Contains QueryContext and ValueContext which is part of the public API for an Index backed by Lucene.

Graph algorithms

org.neo4j.graphalgo

Scalable graph algorithms like shortest path and others for Neo4j which can be easily accessed via GraphAlgoFactory.

Management

org.neo4j.jmx

Management support using JMX.

Query language

org.neo4j.cypher.javacompat

Execute Cypher queries from Java code.

Graph matching

org.neo4j.graphmatching	Facilities for finding occurrences of patterns in a Neo4j graph.
org.neo4j.graphmatching.filter	Filters that allow you to filter out based on properties on nodes and relationships.

Helpers

org.neo4j.helpers	Common Java utilities.
org.neo4j.helpers.collection	Collections utilities - Iterator/Iterable utilities and creating Maps.

Tooling

org.neo4j.tooling