There are no functional ones that we are aware of aside from the Qube "Maya jobtype" plugin (which provides the in-app submission) is not yet available, though that will come about with the next release. The back-end "Maya jobtype" rendering and the "Maya Batchrender jobtype" should both work fine as they rely on scripting or commandline interfaces.
We will be making some fine tuning adjustments for this application in the next release for any paths or options that need adjusting.