A cool guide software alternative

As a mechanical engineer - there is no serviceable free CAD. The only thing you can hope for is Linux compatibility - and you have 100% of that with Onshape only (cloud based).

Freecad is getting more and more attention. When version 1.0 releases (soon), it will be something worth checking out, but there is still work to do.

Linux version of autocad? Is it an autodesk product? Does it support lisp?