AfterLogic WebMail Lite PHP is a free AJAX webmail application. Users can receive, view, manage, compose, and send email through web interface (IMAP and SMTP supported). Source code included.
Claws Mail is a GTK+ based, lightweight, and fast e-mail client and newsreader. Supports POP3, APOP, IMAP, SMTP, SMTP AUTH, NNTP, LDAP, multiple accounts, spell-checking, addressbook, SSL, GPG, filtering, i18n, & more. It is further extended by plugins.
EGroupware has moved to Github, please find all our downloads there: https://github.com/EGroupware/egroupware/releases EGroupware is a multi-user, web-based groupware suite. Currently available modules include: email, addressbook, calendar, infolog (notes, to-do's, phone calls), content management, wiki, project management, tracker, timesheet, knowledge base, CalDAV/CardDAV
This is a full-featured email client for the KDE enviroment. It has the better things about two email clients, MSOutlook(r) and Netscape Mail (r), and some other new features, japanese input with kinput2
AUC for Education is an GPLed intranet system designed for use in a K-12 setting that provides a web-based environment for students and teachers to interact via "Interactive Classrooms" and other innovative features.
Webmail with support for MIME mail, address book, plugin system, differrent themes and languages. Runs on PHP, MySQL and connects to IMAP servers.
A plugin for the MacOS X Mail application that adds the ability to fetch mail stored on a httpmail (Hotmail) server
The Meldware Communications Suite (MCS) is a platform-independent groupware package consisting of: Meldware Mail, Meldware Calendar, Meldware Webmail, Meldware Secure Administration System. It provides IMAP, POP, SMTP, iCal, WCAP, and Webmail services.
Sapotora is a webbased mail system, specialized on customer support. Mails that were sent to a single mail address (like firstname.lastname@example.org) will be processed and grouped into threads, which can be handled by the support staff. Sapotora is pluginextendable
mobileimap is an IMAP-based web mailer for mobile environments.
sylpheed-gtk2 project is over. Please use original Sylpheed-1.9.x or later.