Symscape

Installer for Linux programs, used by SymLab and its add-ons.

Content Management System (CMS).

Installer for Windows programs, used by SymLab and its add-ons.

Solid modeling geometry engine used in SymLab by the Builder add-on, and the Exchange add-on.

Cross platform GUI/framework toolkit used in SymLab.

Graphics library for image processing and 3D visualization, used in SymLab.