ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
HelpSpace - The team inbox with super powers
LightShot - The fastest way to take a customizable screenshot.
Drift - A messaging app that helps you grow your business.