The main things Dune3D has over solvespace are 1 - the ability to include STEP files in assemblies, and 2 - the ability to put a chamfer or fillet on the top/bottom of an extrusion. I don't think it has the ability to select arbitrary edges and apply such features (I could be wrong).

Solvespace 3.2 is essentially done (try the latest edge build), we just need to get github to produce the correct artifacts (not sure what broke). After that we will be adding named parameters to be used in sketches, and I'll try to get back to the chamfer/fillet problem and NURBS issues.