ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Treehouse - Treehouse is an award-winning online platform that teaches people how to code.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Teachable - Create and sell beautiful online courses with the platform used by the best online entrepreneurs to sell $100m+ to over 4 million students worldwide.
LightShot - The fastest way to take a customizable screenshot.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.