Greetings,  

**Is there any open source graph database available other than Neo4J??** 

**NOTE:** *Why not Neo4J?*  

Neo4J is opensource, but counts primitives (number of nodes,relationships & properties). If you are using it for commercial use. And does not have any straight forward information of pricing on official website. so there can be potential vendor lock-in (Although I have just started my company, and don't have budget to spent money on software anyway.) so It is out of option.

Regards,