DepthSense 311 - http://www.softkinetic.com/Store/tabid/579/ProductID/2/langu...
Creative Senz3D - http://us.store.creative.com/Creative-Senz3D-Depth-and-Gestu...
Structure Sensor - https://store.structure.io/preorder
Asus Xtion Pro - http://www.newegg.com/Product/Product.aspx?Item=N82E16826785...
Basically I'm looking for Google's Project Tango, without the hardware constraints.
I'd like to release a developer API (Forge currently runs on Android, Windows & Linux) hopefully later this year, which should be what you're looking for.
Also, I worked in mobile robotics at Willow Garage a few years ago (https://www.youtube.com/watch?v=0aqghgoeCWk), so I'm keen to see Forge used in robotics.
A sensor with a similar form factor is the CamBoard pico, which does produce depth maps. I don't think it's shipping yet.
http://www.pmdtec.com/products_services/reference_design_pic...