ContextCapture - Acute3D develops breakthrough photogrammetry software solutions to automatically turn photos into photorealistic high resolution 3D models
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
Pix4Dmapper - Photogrammetry software for professional drone-based mapping, purely from images.
QCAD - QCAD is an application for computer aided drafting in 2D.
RealityCapture - RealityCapture is a software solution which automatically produces high resolution 3D models from photographs or laser-scans.
FreeCAD - An open-source parametric 3D modeler