PuTTY - Popular free terminal application. Mostly used as an SSH client.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
SelfCAD - SelfCAD is an online 3D modeling and slicing software.
iTerm2 - A terminal emulator for macOS that does amazing things.
SketchUp - 3D for Everyone