Thunderbird
thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. the project strategy is modeled after mozilla firefox.
Kube is a modern communication and collaboration client built with QtQuick on top of a high performance, low resource usage core. It provides online and offline access...
Kube is a modern communication and collaboration client built with QtQuick on top of a high performance, low resource usage core. It provides online and offline access to all your mail, contacts, calendars, notes, todo's and more. With a strong focus on usability, the team works with designers and UX experts from the ground up, to build a product that is not only visually appealing but also a joy to use.
thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. the project strategy is modeled after mozilla firefox.
Free Open Source Windows Linux BSD Mac Haiku
Part of the Microsoft Office Suite, Outlook is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks.
Commercial Mac OS X Windows Android iPhone Android Tablet iPad Web Windows Phone
There’s big news attached. The best way to manage email on a Mac gets even better with OS X Yosemite.
Free Mac OS X iPhone iPad
The free Zimbra Desktop client allows you to meld the online and offline worlds – storing and synching your email, calendar, contacts, files and documents in the cloud, yet having them locally accessible when on the road.
Free Personal Mac OS X Windows Linux
KMail is the email component of Kontact, the integrated personal information manager of KDE. Kontact is a personal information manager and groupware software suite for KDE.
Free Open Source Mac OS X Windows Linux BSD
Boost your productivity and send better email with Mailspring, a beautiful, fast email client for Mac, Windows, and Linux. Mailspring is free to use and an optional pro version adds read receipts, send later, reminders and more.
Freemium
pantheon mail is a free open source email client forked by the elementary os community from geary...
Free Open Source Linux elementary OS
nylas mail lives is a fork of nylas mail that fixes many longstanding issues, improves the client experience, and is committed to...
Free Open Source Mac OS X Windows Linux Self-Hosted