Gremlin is a graph traversal language that connects to various graph databases/frameworks.
* Neo4j [http://neo4j.org]
* OrientDB [http://orientechnologies.com]
* DEX [http://www.sparsity-technologies.com/dex]
* OpenRDF Sail [http://openrdf.org]
* JUNG [http://jung.sourceforge.net]
This lecture addresses the state of Gremlin as of the 0.9 (April 16, 2011).
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