Instantbird : A multi-protocol instant messaging client

Instantbird is a multi-protocol instant messaging client. Using it, you can connect to all your different IM accounts. It uses the Mozilla rendering engine to display messages, and uses the Pidgin libpurple to connect to the different networks.

• Implementation : C++

BitlBee allows users to talk to people on the MSN, ICQ, Jabber, Yahoo!, and AIM networks with any IRC client by emulating an IRC server

BitlBee allows users to talk to people on the MSN, ICQ, Jabber, Yahoo!, and AIM networks with any IRC client by emulating an IRC server. A virtual channel is created with all of the user's buddies in it, who can be talked to in the channel or in a query. Also, one can participate in group chats and chat rooms like they were normal IRC channels.

• Licenses : GPL
• Operating Systems : POSIX, Linux, Solaris, BSD, Windows, Mac OS X
• Implementation : C

RetroShare : A cross-platform private P2P sharing program

RetroShare is a cross-platform private P2P sharing program. It lets you share securely with your friends, using a web-of-trust to authenticate peers and OpenSSL to encrypt all communication. RetroShare provides file sharing, chat, messages, and channels.

• Licenses : LGPL GPL
• Operating Systems : POSIX, Linux, Windows, mac
• Implementation : C++, Qt

RetroShare : A cross-platform private P2P sharing program

RetroShare is a cross-platform private P2P sharing program. It lets you share securely with your friends, using a web-of-trust to authenticate peers and OpenSSL to encrypt all communication. RetroShare provides file sharing, chat, messages, and channels.

• Licenses : LGPL, GPL
• Operating Systems : POSIX, Linux, Windows, mac
• Implementation : C++, Qt

Mumble : Low-latency, high quality voice chat software primarily intended for use while gaming

Mumble is low-latency, high quality voice chat software primarily intended for use while gaming. It should compile and run the client out of the box on at least Ubuntu 6.06, and quite likely other distributions as well.

• Licenses : BSD Revised GPL
• Operating Systems : Windows, POSIX, Linux
• Implementation : C++

Mumble : Low-latency, high quality voice chat software primarily intended for use while gaming

Mumble is low-latency, high quality voice chat software primarily intended for use while gaming. It should compile and run the client out of the box on at least Ubuntu 6.06, and quite likely other distributions as well.

• Licenses : BSD Revised, GPL
• Operating Systems : Windows, POSIX, Linux
• Implementation : C++

InspIRCd : A fully modular IRC daemon

InspIRCd is a fully modular IRC daemon with modular SSL (gnutls or OpenSSL), ziplinks (through zlib) support, advanced spam filters, flood controls, settable operator levels, and SQL login using PostgreSQL, MySQL, or SQLite.

• Licenses : GPL
• Operating Systems : Windows, POSIX, BSD, Mac OS X, Linux
• Implementation : C#, C++

IRC Services : Aa system of services to be used with Internet Relay Chat networks

IRC Services (also called just "Services" for short) is a system of services to be used with Internet Relay Chat networks. Services provides for definitive nickname and channel ownership, as well as the ability to send messages ("memos") to offline users, and gives IRC operators considerably more control over the network.

• Licenses : GPL
• Implementation : C