Conflux is Web-based groupware and collaboration software. It offers a shared central document repository, shared calendars, tasks and contacts, and an email client. It has support for Unicode, multiple languages, and date/time formats for the English, German, and Estonian languages. Access rights are offered in hierarchical (group) form.
NullLogic Groupware is a modular Web-based groupware and email system designed for contact management and event scheduling. Additional features include private messaging, public discussion forums, webmail, shared bookmarks, file sharing, call tracking, order processing, an XML-RPC API, and integrated POP3 and SMTP servers.
This is the University of Washington's IMAP source distribution, which includes the IMAP4rev1 server, as well as a POP server that, in addition to offering the normal POP service, can relay commands to an IMAP server, thus permitting existing POP clients to access an IMAP server.
XamimeLT is an email scanner which encapsulates your existing sendmail or Postfix server setup. It scans both incoming and outgoing email. It can scan for email viruses, unwanted file types (eg. EXE, BMP, MPEG) and file names (eg. prettypark.exe), spam, and almost anything you care to search for in an email. It can also be used to scan for text snippets within emails and to insert disclaimers into outbound emails. XamimeLT was formerly known as "Inflex".
Akeni LAN messenger is a cross-platform instant messenger client. It is a P2P program that works on your LAN without the need of an Internet connection or a dedicated server. The client has an user interface similar to AIM, ICQ, or MSN Messenger. It supports all the standard IM features such as chat, group conference, presence management, file transfer, and emergency alert/notification. Extra features include contact management and optional tabbed chat sessions.
Mail Master is a full distributed management interface integrating sendmail, SpamAssassin, horde, and Open Anti-virus. It includes unlimited users, integrated anti-virus, user configurable spam-filter, a Web mail interface, disk quotas, custom sendmail setup, POP3, IMAP, and multi-level management (lets domain administrators and users manage their mail settings).
Saké Mail is a very high performance Web-based email system, designed for scaling to large numbers of concurrent users. It takes advantage of the Java Servlet API's memory-resident architecture and multi-threading HTTP response model. It avoids file system accesses through memory caching at every possible point, and never needs to touch the file system at runtime at all if coupled with an IMAP server. It supports POP3, IMAP, and SMTP, including authenticated SMTP. It also provides an extremely sophisticated message rendering system that can easily handle even complex HTML encoded messages with attachments that have been forwarded multiple times.
@1 Helpdesk XP Perl is a very powerful Web-based helpdesk system. It supports file attachments, hidden remarks, priority marking, etc. Unlike other similar products, this script does not use the conventional "assign/completed" method to close past tickets. Instead, it uses an intelligent method to sort/rank inquiry tickets. You can even tell whether your replies have been read by the visitors.