ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Regard3D - Regard3D is a free, multiplatform, open-source structure-from-motion application.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Pix4Dmapper - Photogrammetry software for professional drone-based mapping, purely from images.
LightShot - The fastest way to take a customizable screenshot.
RealityCapture - RealityCapture is a software solution which automatically produces high resolution 3D models from photographs or laser-scans.