ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
MailtoUI.js - Enhance your mailto links with a convenient user interface.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Mailjoy - Delightfully easy direct mail marketing. A DIY direct mail tool created for marketing and growth teams. Design, mail & track personalized direct mail postcards and letters. Digital marketers use Mailjoy to send data-driven mail campaigns.
LightShot - The fastest way to take a customizable screenshot.
The Simple Postcard - Text a photo to mail it as a postcard