Apache TinkerPop is a graph computing framework that supports both graph databases (OLTP) and analytic systems (OLAP). It includes providers for property graphs, components like the Gremlin traversal machine/language and Gremlin Server. Gremlin has traversal languages implemented in Groovy, Java, .NET, JavaScript, Python and more. Getting started involves using Gremlin Server and resources are available on the Apache TinkerPop website and Kelvin Lawrence's book.