"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."
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Gotty - GoTTY is a simple command line tool that turns your CLI tools into web applications.
Snagit - Screen Capture Software for Windows and Mac
Pagekite - Bring your localhost servers on-line.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
tmate - Tmate is a instant terminal sharing based on ssh.