Eric Winemiller kindly sent his DAZ Carrara Digital Carvers Guild plugins open source last summer. Ground Control for DAZ Studio has also now been released for free. Always free, really free, which is what ‘open source’ means. Ground Control imports DEMs (digital elevation maps) into DAZ Studio, along with Terragen .TER files.
Readers of this blog who are here for my 3D comics production posts, will likely be most interested in the Toon! Pro plugin for Carrara, now free in the bundle. Although in terms of what it can do with artistic inked lines it seems to have been superseded by Poser 11. Though if you have no Poser 11, but do have an old copy of Cararra on a CD disc somewhere, and getting toon outline lines from DAZ Studio is too fiddly for you, then… you might make the ink lines with this plugin fairly easily and then run them through DAP 6’s GrNovel filter to make them look more hand-inked.

Carrara 8 is DAZ Studio's official 'big sister' software.
Carrara loads all DAZ and Poser characters and scenes,
and supports LuxRender for top-quality realistic rendering.