When provisioning an instance through our Heroku addon , the latest stable version will be used by default.

You can deploy a specific version by passing a `--version` param to the Heroku CLI with the corresponding version string.

Example for Neo4j v 2.2.5:

This is a list of the versions currently available and the corresponding version parameter strings:

Name	--version <STRING>

We recommend that you use the Cypher query language, but you can also use Gremlin or REST traversals to query your instance.

We test some drivers explicitely to ensure that they work properly with our hosting serice. The drivers we have tested to work with GrapheneDB are:

• Java OGM
• Neo4jPHP
• Neocons (Clojure)
• Neography (Ruby)
• Node-neo4j (Node.js)
• Seraph (Node.js)
• Py2Neo (Python)
• Python REST Client

We will continue to work on testing more drivers to detect any compatibility problems and make sure you don't experience any problems with official drivers. Besides our list of verified drivers, there is a whole range of official Neo4j drivers that you can use with GrapheneDB. If you encounter any problems using any official Neo4j driver please get in touch with us. We will be glad to help you out.