MeeBone Packages Meebo Chat for Your Desktop
Windows/Mac/Linux (Adobe Air): MeeBone, an Adobe Air implementation of chat aggregation service Meebo, makes the previously web-only chat service feel like a standard instant messaging app, complete with a skinny buddy list and pop-up chat windows. You can sign into AIM, GChat, MSN, ICQ, or any other service supported by Meebo, and you'll get all the integrated video and voice chat options offered on Meebo's website. It doesn't have all the options of dedicated desktop clients like Pidgin, but it is slick, easy to use, and adds simple video. MeeBone is a free download, requires the Adobe Air platform to run.



Jailbroken iPhones/iPod touches only: Agile Messenger isn't the only multi-client app available for the iPhone, but it makes mobile messaging seriously convenient, and it's pretty slick-looking, to boot. Agile supports the AIM, GoogleTalk, MSN, Yahoo, ICQ, and Jabber protocols, can run in the background and update its home screen badge for messages, and places your multiple conversations easily-navigable tabs. What's really intriguing is its copy/paste function—simply select some text with your finger, click to copy it, then paste it into your text field. The app also makes sending pics from your iPhone camera a one-click process. Agile Messenger is a free download (at least while in beta), available through the Installer program on a 
Windows only: Dexrex, a free set of plug-ins for most popular IM clients, lets you store transcripts of your IM conversations from any system online for later reference. Dexrex's plug-ins work with Digsby, Pidgin, AIM Messenger, Yahoo Messenger, and
Multi-IM-client mobile phone app Palringo, 

Windows/Linux: The Facebook Chat for Pidgin plug-in connects the popular open-source chat application Pidgin with the new Facebook Chat instant messaging service. Facebook integration is one of the
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