LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
Fonn - Fonn is a cloud-based solution designed to increase productivity and profitability on construction sites.
SketchUp - 3D for Everyone
WIZZCAD - WIZZCAD is the first Open BIM-based platform for the digital transformation of all your construction projects.
FreeCAD - An open-source parametric 3D modeler
VisualARQ - VisualARQ is a commercial architectural BIM software that works as a plugin for the Rhinoceros CAD application.