You could have downloaded Antimony 0.9.3 for Mac from our software library for free. This free Mac application was originally developed by Matt Keeter. The software relates to Design & Photo Tools.
From the developer:
Antimony is a computer-aided design (CAD) tool from a parallel universe in which CAD software evolved from Lisp machines rather than drafting tables. Antimony is built on three mostly-orthogonal axes:
- A framework for tracking information flow through directed acyclic graphs.
- A geometry engine for doing CSG.
- A standard library of shapes and transforms.
You may want to check out more software for Mac, such as Realsoft3D, formZ RenderZone Plus or FRS Coloring Book Volume 2, which might be related to Antimony.