Axure
Balsamiq
Invision
Zeplin
Moqups
Proto.io
ProtoPie
Flinto
DraftSight
LibreCAD
SketchUp
FreeCAD
Autodesk AutoCAD
BricsCAD
nanoCAD
QCAD
Axure
DraftSightBalsamiq - Balsamiq. Rapid, effective and fun wireframing software.
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
Invision - Prototyping and collaboration for design teams
SketchUp - 3D for Everyone
Zeplin - Collaboration app for UI designers & frontend developers
FreeCAD - An open-source parametric 3D modeler