Automaton (prev. Barbie) is a bot that, while having hard-coded commands, does not have any scriptability. The developer has stated that this will be included in the next version.
It is unique in that it runs on all major platforms (Windows, Linux, and OS X) and is completely independent of the Furcadia client.
The owner has placed the project under hiatus, however, he expects to lift that hiatus during summer and get the oft-delayed and near-mythical 1.5 release out.