Wordzen - We write your emails for you. Literally.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
InboxVudu - Spend 90% less time on e-mail.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Mailbutler - Mailbutler adds lacking functionality to email clients and increases your productivity
LightShot - The fastest way to take a customizable screenshot.