GIMP - GIMP is a multiplatform photo manipulation tool.
Dozuki - Dozuki is a web-based tool for creating and distributing step-by-step documentation.
Fiji - Fiji: A batteries-included distribution of ImageJ.
ClassVR - VR Training Simulator
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
ScreenSteps - IT Training Docs For Your Cloud Implementation. Use ScreenSteps when your company implements new cloud technology and you need training docs