Mailspring - Mailspring is a mail client for Mac, Windows and Linux.
Blockchain Demo - Visual demonstration of blockchain technology
The Bat - The Bat! is a secure desktop email client for Windows, designed to protect your correspondence against third-parties and to save your time.
LetterHunt - LetterHunt connects you to 10,000+ niche, active newsletter writers to promote your product.
Geary - Geary is an email application built for GNOME 3.
Toshi - A browser for the Ethereum network