Mailspring - Mailspring is a mail client for Mac, Windows and Linux.

Simple Scan - Project information. Part of: The Gnome Project. Maintainer: Simple Scan Development Team. Driver: Simple Scan Development Team. Licence: GNU GPL v3.

Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!

XSane - A good proposal for SANE-2 has been written.

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.

MetaDMS Scan Software - MetaDMS Scan Software is a free to use program for the Windows operating systems for scanning paper documents within few clicks.