Additional results

GibPhone is a highly extensible VoIP/IM client for the .NET framework that uses a powerful plugin engine to allow for UI extensions and any call control stack / media payload / transport protocol combination.

This is a project aimed at producing a file sharing client using the ADC protocol. It also supports connecting to the Direct Connect network.

PeerGuardian helps protect your privacy by blocking many ranges of aggressive IPs while you use P2P.

Gaim is a GTK+ instant messaging application. It supports multiple protocols, including AIM, ICQ, Yahoo!, MSN, Jabber, IRC, Napster, Gadu-Gadu, Zephyr, and SILC. It has many common features found in other clients, as well as many unique features

A very nice MSN compatible messenger application, aMSN Messenger is a multiplatform MSN messenger clone. Works pretty much like its Windows based counterpart. Perfect for keeping in touch with those friends who have not yet seen the light. Works ...

Azureus is a powerful, full-featured, cross-platform bittorrent client.