Insight Server is a Linux-based email server utilizing open source components to provide a highly reliable, scalable, and cost effective email solution for customers of all sizes. It's designed to facilitate complete messaging and collaboration capabilities within a company. It supports all standard protocols, and provides backup and recovery tools, server redundancy, migration tools, and resource management.
Claros Mini is a multi-protocol (POP3/IMAP) Web mail client with a user interface that is specially designed for devices with small screens. It can parse HTML and extract text to reduce the size of messages. The installation process takes less than two minutes, and no database setup is needed.
Scalable OGo (SOGo in short) is a groupware server built around the SOPE application server. Unlike OGo, it is focused on scalability instead of depth in functionality. The Web interface uses human-readable URLs and can be accessed according to REST Web service ideas. Notably, it requires no server side session at all. The server stores all internal data in the iCalendar format, and therefore has no data model inconsistencies with native clients. It easily connects using GroupDAV connectors.
Horde Groupware Webmail Edition is an enterprise ready browser-based communication suite. Users can read, send, and organize email messages and manage and share calendars, contacts, tasks, and notes with the standards compliant components from the Horde Project. It bundles the separately available applications IMP, Ingo, Kronolith, Turba, Nag, and Mnemo. It can be extended with any of the released Horde applications or the Horde modules that are still in development, like a file manager, a bookmark manager, a forum, or a wiki.
Dbiff attempts to provide email notification in a form similar to biff+comsat, but without the need for a comsat daemon. Rather, a copy of each email is filtered through the dbiff program using a mail delivery agent such as procmail, and dbiff then displays a summary of the message on each of the user's terminals that has the executable bit set. dbiff can also provide a condensed format similar to that used by djb's qbiff, and a bell mode like that available in FreeBSD. The bell mode is accessible either by setting a terminal's group executable bit ('biff b' in FreeBSD) or by using a flag in the dbiff command. An option is also available to write the email message only to the most recently used terminal.
Mac Mass Mailer is a fully-featured mass mailer that supports message templates and a recipient database. It offers everything you need to create and maintain mailing lists for different needs and send mass messages directly from your computer at a very high speed. It uses Apple Mail's message delivery framework to deliver your messages. The recipient database is fully customizable. You can add as many recipient fields as you want and use them in message templates for the purpose of personalizing your messages.