Is it available in Linux?
All of my computers are set up to dual boot Linux. I am using the latest version of Ubuntu Studio. It has 3D Design software included, Blender... It has many more options but is much less intuitive and more difficult to learn than 3D Design. I use a lot of shortcuts in 3D Design that I do not believe are available in Blender.
If you choose to be a purist... Blender and other 3D design software is available for Linux.
>Is it available in Linux?
The slicers are. I use Slic3r, which is perl based and runs on just about everything.
3D software is another story. Blender, Openscad, and a few others run under linux. Most of the commercial packages aren’t available for linux.
Personally, I use Rhino3d for 3d editing on a windows VM accessed via rdesktop.