PUBLIC MARKS with tags client & gtalk

AirTalkr is a multi-protocol Instant Messenger that connects to MSN, Yahoo!, GTalk, AOL and ICQ. Not only that, it also has connects to to various Web 2.0 services like Flickr and YouTube. AirTalkr runs on Adobe AIR, so you will need the runtime to use it. As of now, AirTalkr can run on Windows and Mac. Also has Web version

ILoveIM.com Web-based Instant Messenger service lets you stay connected with MSN, Yahoo, AIM, Gtalk and MySpace messengers.

MSN, AIM/ICQ, Yahoo, and GTalk/Jabber Your friends will show up in the Friends List to the right and as pictures inside the map. The pictures around the map are other people located somewhere within the map view, but you don’t know exactly where. You can drag or zoom the map to a new place to see new people from that area. Remember that radiusIM is a full application living inside your browser so try right clicking and sizing the windows to make it work better for you. Login required

imo.im is a web-based service that allows users to hold text, voice, and video chats on multiple instant messaging protocols. Currently supported protocols include AIM, Google Talk, ICQ, MSN, MySpace, Skype, and Yahoo Messenger. The service is free and requires no user-registration or sign-up.

Multi-protocol Proteus is an Instant Messenger that uses the IM framework libpurple and is written using Mac OS X's API Cocoa. Proteus attempts to bridge the gap between functionality and beauty, using native the Mac interface with a powerful core to get your hard core instant messaging done.

Très bon client googletalk pour j2me, mais malheureusement, uniquement gtalk (pas d'autres serveur) et il passe par une passerelle proprio. Lire privacy : les conversations sont conservées... Préférer MGTalk, un peu plus buggué mais open

http://www.communicationtube.net/ - It’s a free web-client for the popular IM (internet messaging) networks which currently supports ICQ, MSN Messenger and Google Talk.

Works behind a firewall or proxy servers. Support AIM, ICQ, MSN, Yahoo, IRC, Jabber, Sametime, RSS News, and Stocks.... We also support Sametime, Simple, SIP, LCS, and Jabber on the enterprise side. We plan on soon launching SMS and ringtone support.

In-browser instant messaging client aggregator