Sunbird is described as 'Mozilla Sunbird was a cross-platform calendar application developed by the Mozilla Foundation, Sun Microsystems and many volunteers. Our goal was to provide you with full-featured and easy to use calendar application that you can use around the world' and is a Calendar app in the office & productivity category. There are more than 25 alternatives to Sunbird for a variety of platforms, including Windows, Mac, Web-based, Linux and iPhone apps. The best Sunbird alternative is Google Calendar, which is free. Other great apps like Sunbird are Microsoft Outlook, eM Client, Apple Calendar and Rainlendar.
Koma-Mail is an email client which is comfortable and has very handy functions. It does not need an installation, so that you can run Koma-Mail from your flash drive but, of course, also on your desktop.
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