Gremlin is a Turing-complete, graph-based programming language developed in Java 1.6+ for key/value-pair multi-relational graphs called property graphs. Gremlin makes extensive use of the XPath 1.0 language to support complex graph traversals. This language has applications in the areas of graph query, analysis, and manipulation. Connectors exist for the Neo4j graph database, Sesame 2.0 RDF stores, and TinkerGraph.

The documentation for Gremlin can be found at this location. Finally, please visit TinkerPop for other software products.