Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
LightShot - The fastest way to take a customizable screenshot.
ZBrush - ZBrush is a digital sculpting and painting software solution.