Mail and Calendar

Mail and Calendar is an email client by Microsoft that comes bundled inside the Windows 10.

Calendar

Calendar is a time-management web application by Microsoft.

OSX and Productivity

Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response

Apps/Evolution - GNOME Wiki!

Spend less time managing your day & more time enjoying it

GyazMail is an advanced level of an email account management system for the Mac OS X operating system users.

Organize your life — it’s about time!

Mailbird is the best email client for Windows 7, 8 and 10

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

Starting with version 0.9.8, mu provides an emacs-based e-mail client which uses mu as its back-end: mu4e.

Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.

Pale Moon is an Open Source, Mozilla-derived web browser available for Microsoft Windows and Linux, focusing on efficiency and ease of use.

The Power Email App for busy professionals, like you.

Secure email with absolutely no compromises. Get your free encrypted email account today.

Rainlendar - Customizable desktop calendar

Integrated organizer with automatic scheduling.

Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).

Navigate messages with zooms and swipes across your messages.

eM Client is a Windows-based email client for sending and receiving emails, and managing calendars, contacts and tasks.