Airgora - A visual community for physical product designers
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Team Sketch - A community for Sketch designers powered by Slack.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
VSCO Messages - A place for creative conversation
LightShot - The fastest way to take a customizable screenshot.