BodyPaint 3D R13 (Mac/Windows)
BodyPaint 3D is easy to use, professional 3D software for Mac and Windows that enables you quickly create jaw-dropping textures. Included is a powerful suite of image-editing, painting and UV-editing tools that make it easy to create textures over single or multiple objects.
BodyPaint 3D can be used with almost any 3D application thanks to a wide range of file exchange formats, and includes plugins for exchange with 3ds Max, LightWave, Maya and Softimage.
The complete toolset of CINEMA 4D Prime is included, such as rendering, modelling and lighting tools.

BodyPaint 3D’s powerful projection painting eliminates the problems of UV breaks or seams. A full 3D environment lets you paint multiple channels directly on the model in real-time and BodyPaint 3D’s even smart enough to warp textures to fit stretched UVs so they look great to the camera.
BodyPaint 3D is also ideal for use in combination with Adobe Photoshop. Freeze the view you want to paint, send it to Photoshop at the click of a button, then when you are done in Photoshop, send the painting back and your painting is projected onto the model's UVs. Multiple layers per material channel are supported.
More info at maxon.net