TopMod is a fun 3D modeling program originally developed at TAMU. The repository at code.google.com has since been frozen, and work seems to have been abandoned on it for many years.
This repo contains a git mirror of the original code from code.google.com/p/topmod along with some fixes to get it to compile on a more modern Linux system.
You can find some info about TopMod on Prof. Akleman's website at:
http://people.tamu.edu/~ergun/research/topology/index.html
and on the old Google Sites page: