Thunderbird
Open Source
Thunderbird is a open source mail client developed and maintained by Mozilla foundation.
Lightning
Open Source
Lightning App Builder is a point-and-click tool that makes it easy to create custom pages for Salesforce1 and Lightning Experience.
Claws Mail
Open Source
Claws Mail is a free and open-source, GTK+-based email and news client. It offers easy configuration and an abundance of features.
Sylpheed
Open Source
Sylpheed is an open-source e-mail client and news client licensed under the GPL.
Zimbra Desktop
Free Personal
Zimbra Desktop is an offline client that lets you manage various email accounts in one desktop tool.
Kontact - KMail
Open Source
KMail is the email component of Kontact, the integrated personal information manager from KDE.
Kontact - KOrganizer
Open Source
KOrganizer is the calendar and scheduling component of Kontact, the integrated personal information manager from KDE.
SeaMonkey
Open Source
SeaMonkey is a free and open-source Internet suite.
Evolution
Open Source
Evolution is the official personal information manager for GNOME.
Geary
Open Source
Geary is an email application built around conversations, for the GNOME 3 desktop. It allows you to read, find and send email.
Mutt
Open Source
Mutt is a text-based email client for Unix-like systems.
OpenProject
Open Source
OpenProject is a web-based project management system for location-independent team collaboration.
Kontact
Open Source
Kontact is a personal information manager and groupware software suite developed by KDE. It supports calendars, contacts, notes, to-do lists, news, and email.
Compare Microsoft Mail and Calendar with alternatives
Compare Thunderbird and Microsoft Mail and Calendar and decide which is most suitable for you.
Compare SeaMonkey and Microsoft Mail and Calendar and decide which is most suitable for you.
Compare Lightning and Microsoft Mail and Calendar and decide which is most suitable for you.
Compare Evolution and Microsoft Mail and Calendar and decide which is most suitable for you.
Compare Claws Mail and Microsoft Mail and Calendar and decide which is most suitable for you.
Compare Geary and Microsoft Mail and Calendar and decide which is most suitable for you.
Compare Sylpheed and Microsoft Mail and Calendar and decide which is most suitable for you.
Compare Mutt and Microsoft Mail and Calendar and decide which is most suitable for you.
Compare Zimbra Desktop and Microsoft Mail and Calendar and decide which is most suitable for you.
Compare OpenProject and Microsoft Mail and Calendar and decide which is most suitable for you.
Compare Kontact - KMail and Microsoft Mail and Calendar and decide which is most suitable for you.
Compare Kontact and Microsoft Mail and Calendar and decide which is most suitable for you.
Compare Kontact - KOrganizer and Microsoft Mail and Calendar and decide which is most suitable for you.