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Thunderbird delivers. Enjoy safe, fast, and easy email, with intelligent spam filters, quick message search, and customizable views. Brought to you by Mozilla, Thunderbird makes email better. User web site: http://www.mozilla.com/thunderbird
Evolution provides integrated mail, addressbook and calendaring functionality to users of the GNOME desktop.
Dovecot is an open source IMAP and POP3 server for Linux/UNIX-like systems, written with security primarily in mind.
KDE PIM is sub project of KDE. Its goal is to provide an application suite to manage personal information. This includes mail, time, people and more. The main result is KDE Kontact, our personal information manager.
Fetchmail is a full-featured, robust, well-documented remote-mail retrieval and forwarding utility intended to be used over on-demand or permanent dynamic-address TCP/IP links (such as SLIP or PPP connections). It supports every remote-mail protocol now in use on the Internet: POP3, IMAP4r1, ETRN ... [More]
OBM is a groupware, email, LDAP, Windows PDC, CRM, and project management application. It is mainly used as an Exchange or Notes/Domino groupware and mail server replacement, as an LDAP directory, as a Windows PDC, as a contact and customer database, as a project management tool, or as any ... [More]
qmail is a modern SMTP server which makes sendmail obsolete, written by Dan Bernstein. Qmail was released under the public domain in november 2007.
Horde is both an Open Source software project and an application framework written in PHP. The application framework is currently the basis for 50 applications written by developers from around the world, including the flagship IMP Webmail client, the popular Chora repository viewer, and a complete ... [More]
ISPConfig is an open source hosting control panel for Linux. ISPconfig 3 is capable of managing multiple servers from one control panel. Managed Services and Features *Manage one or more Servers from one Controlpanel (Multiserver Management) *Different permission levels (Administrators ... [More]
Ever wanted to get rid of Outlook ? DavMail is a POP/IMAP/SMTP/Caldav/LDAP gateway allowing users to use any mail/calendar client with Exchange, even from the internet through Outlook Web Access on any platform, tested on MacOSX, Linux and Windows