Thunderbird
Open Source
Thunderbird is a open source mail client developed and maintained by Mozilla foundation.
Mailspring
Freemium
Mailspring is a multi-platform email client.
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.
Kontact - KMail
Open Source
KMail is the email component of Kontact, the integrated personal information manager from KDE.
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.
Evolution
Open Source
Evolution is the official personal information manager for GNOME.
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.
Open365
Open Source
Open365 is an all-in-one productivity suite, based on KDE, Seafile, LibreOffice, Docker, and Jitsi.
Compare Microsoft Office Outlook with alternatives
Compare Thunderbird and Microsoft Office Outlook and decide which is most suitable for you.
Compare Evolution and Microsoft Office Outlook and decide which is most suitable for you.
Compare Mailspring and Microsoft Office Outlook and decide which is most suitable for you.
Compare Claws Mail and Microsoft Office Outlook and decide which is most suitable for you.
Compare Geary and Microsoft Office Outlook and decide which is most suitable for you.
Compare Sylpheed and Microsoft Office Outlook and decide which is most suitable for you.
Compare Mutt and Microsoft Office Outlook and decide which is most suitable for you.
Compare Zimbra Desktop and Microsoft Office Outlook and decide which is most suitable for you.
Compare Kontact - KMail and Microsoft Office Outlook and decide which is most suitable for you.
Compare Open365 and Microsoft Office Outlook and decide which is most suitable for you.
Compare Kontact and Microsoft Office Outlook and decide which is most suitable for you.