Мультиплатформеный интернет-пейджер с поддержкой чуть ли не всех существующих протоколов

LimeWire is a powerful Gnutella file sharing client with great features.

Voix manager is a switchboard application with an IAX phone integrated.

Spamfilter is meant to be used via the .qmail files that the qmail mail system uses to control what to do with incoming emails.

Ricochet project traces the names and addresses of the systems where the spam originated from...

SendForm is an easy-to-use form mailer script in PHP that uses SendMail to send the entries in a form to a specified recipient.

ASSP is the best SPAM fighting weapon that the world has ever known!

Chebyshev application allows someone to set up a spam filtering email forwarding service.

isdnMonitor saves call information (number, name, connection, and duration) in a MySQL database.

OpenChange project intends to provide an implementation of Microsoft Exchange under Unix platforms.

GDamafon project is an Open Source implementation of the Damafon protocol.

MLdonkey is a file-sharing client for eDonkey, FastTrack, and Overnet, etc.

mime4j project provides a parser, MimeStreamParser , for e-mail message streams in plain rfc822 and MIME format.

KNewz project is a binary newsgroup client for KDE4.

Postfix is Wietse Venema's mailer that started life as an alternative to the widely-used Sendmail program.

Brutus is an Exchange connector and development framework.

Brutus is an Open Source connector for Exchange 5.5, 2000 and 2003, to put it short.

Licq is a multi-threaded multi-protocol chat client written mostly in C++.

Kopete is a flexible and extendable multiple protocol instant messaging system designed as a plugin-based system.

Linux DC++ is a project to port the DC++ direct connect client to Linux or any POSIX-compliant Unix.

Psi is a program for connecting to the Jabber messaging network.

Moodle is a course management system for distance education.

Jimm is an ICQ™clone for mobile devices with J2ME (MIDP) technology.

mICQ is a portable, small, yet powerful console-based ICQ client.

Kopete OTR Plugin enables Off-The-Record encryption for the KDE instant messenger Kopete.

QTorrent is a BitTorrent client that uses the Qt widget-set.

Overnet is the distributed search network that the donkey uses to find files.

Valknut is a peer-2-peer file-sharing program.

Мультиплатформеный интернет-пейджер с поддержкой чуть ли не всех существующих протоколов

SJphone is a VOIP softphone that allows you to speak with any other softphone, any stand-alone IP-phone.