topCAD 10.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free Mac application is pantomat.
The following version: 10.1 is the most frequently downloaded one by the program users. The software lies within Design & Photo Tools, more precisely 3D Modeling. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
topCAD is an easy-to-use multifunctional tools.
topCAD is used by several hundred mechanical designers and architects throughout Europe with success.
Pantomat recommends these applications to those for whom the possibilities of usual CAD applications are insufficient.
You may want to check out more software for Mac, such as TOPCAT, which might be similar to topCAD.
3D Design
Simulation