FreeCAD is a parametric 3D modeler. Parametric modeling
allows you to easily modify your design by going back into
your model history and changing its parameters. FreeCAD is
open source (LGPL license) and completely modular, allowing
for very advanced extension and customization.
FreeCAD is multiplatfom, and reads and writes many open
file formats such as STEP, IGES, STL and others.
There are three maintained channels for this snap:
stable contains the latest upstream release, i.e. the most recent tagged commit. (Use this if you don't know what you're doing.)
beta contains automated weekly promotions from edge. (Use this if you want edge with fewer updates.)
edge contains automated (daily) builds from the latest master commit. (Use this to test new features. Might be unstable.)
There are multiple apps/commands included in the snap:
freecad: Run FreeCAD
freecad.cmd: Run FreeCAD command line interface
freecad.pip: Install python packages for user (not system-wide).
E.g. freecad.pip install py_slvs for Assembly3.
Side note: There is a FreeCAD experimental branch called 'Link branch' created by a user named 'realthunder' that has become popular. It is available as a Snap package named freecad-realthunder (https://snapcraft.io/freecad-realthunder).