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.
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
Mailspring - Mailspring is a mail client for Mac, Windows and Linux.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
Geary - Geary is an email application built for GNOME 3.
Wondershare PDFelement - All-in-one PDF editor