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

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++

Minbif aims to use the libpurple library from the Pidgin project to provide an IRC-friendly instant messaging client

Minbif aims to use the libpurple library from the Pidgin project to provide an IRC-friendly instant messaging client. It uses the libpurple library to support over 15 IM protocols.

• Licenses : GPLv2
• Operating Systems : Linux
• Implementation : C++, libpurple, inetd, daemon

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