Pacer-orient is a project mainly written in Ruby, it's free.
OrientDB adapter for pacer
Pacer is a JRuby graph traversal framework built on the Tinkerpop stack.
This plugin enables full OrientDB graph support in Pacer.
Here is how you open a OrientDB graph in Pacer.
require 'pacer' require 'pacer-orient'
graph = Pacer.orient 'local:path/to/graph'
graph = Pacer.orient 'memory:foo'
graph = Pacer.orient 'remote:localhost/graph', 'username', 'password'
All other operations are identical across graph implementations (except where certain features are not supported). See Pacer's documentation for more information.