If you liked the old version of BobCAM which had VoluMill, and don't want to buy VoluMill, you can get it for free via a special promotion by orderfox - http://volumill.orderfox.com and use the promotion code VOLUMILL05

It's the standalone version NEXION Essentials which you can import geometry, and export CL data, etc and bring it back in to your CAM system.