TinkerPop2 and below made a sharp distinction between the various TinkerPop projects: Blueprints, Pipes, Gremlin, Frames, Furnace, and Rexster. With TinkerPop3, all of these projects have been merged and are generally known as Gremlin.Blueprints → Gremlin Structure API : Pipes →
GraphTraversal: Frames →
Traversal: Furnace →
VertexProgram: Rexster → GremlinServer.