TeraCopy - TeraCopy is a compact program designed to copy and move files at the maximum possible speed, providing the user with a lot of features.
Mailspring - Mailspring is a mail client for Mac, Windows and Linux.
NAPS2 - NAPS2 is a document scanning application with a focus on simplicity and ease of use.
Geary - Geary is an email application built for GNOME 3.
Opendias - Opendias is a professional document scanning and storage utility for the home user.
Airmail - Airmail is a lightweight and lightning fast mail client for Mac.