BRL-CAD

Powerful open-source solid modeling suite for advanced CAD, engineering visualization, and geometry analysis

Comprehensive 3D modeling tool with advanced NURBS capabilities for detailed and precise design creation

An application for editing graphics and drawing

Free, feature-rich digital painting tool for creating comics, illustrations, and collaborative manga projects

Viewing and conversion software for .dwg files

An open-source drawing and art software app

Proprietary graphics software designed to allow users to create and sculpt virtual three dimensional projects