"We aren’t just building amazing software, we are revolutionizing team communication. Collaborate with coworkers using screen recordings, GIFs, high-def videos, and annotated screenshots, all with one nifty link copied straight to your clipboard. Customize every piece of work with your own branding. Last but not least, privately secure your content like a mob boss."
Kap - Kap is an open-source screen recorder built with web technology.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Smartshot - Smartshot software is an open source platform that allows its users to take screenshots of their devices conveniently.
Snagit - Screen Capture Software for Windows and Mac
Enpose - The simple screenshot bot
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.