Neo4J is open source. > The Neo4j Community Edition is licensed under the free GNU General Public License (GPL) v3 while the Neo4j Enterprise Edition is dual l

Neo4J is open source. > The Neo4j Community Edition is licensed under the free GNU General Public License (GPL) v3 while the Neo4j Enterprise Edition is dual licensed under Neo4j commercial license as well as under the free Affero General Public License (AGPL) v3. http://neo4j.com/open-source-project/ http://neo4j.com/open-source-project/