"Digsby

• Stay up to date with everything happening on your Facebook, Twitter, or MySpace account (other network support coming soon).
...

"Watch the flotsam and jetsam of data that you care about in this mash-up of Facebook, Flickr, Twitter, Digg and blogs. Using this simple application, you can configure what you want to watch and the speed in which you s ...

"A java application which :

1. check your Jabber or google talk (gtalk) status and update your Twitter status if there is a new one.
2. check yours meetings in google calendar and se ...

"MadTwitter is a Windows application that lets you read “twits” written by your friends and publish your own. It’s inspired in Twitterrific, a really nice application for Mac. As I couldn’t find an equivalent one for Win ...

"If you are an Outlook user, you probably have it open all the time. Now you can update your Twitter status and follow your friends without having to open any other applications. OutTwit seamlessly integrates Twitter int ...

"There are many microblogging services out there. Sometimes you feel you have a “message” to send or a question to ask. If you subscribed many services, one of the first questions arising is: where do I post this? Twitte ...

"Pwytter is a standalone Twitter client.

Download Free software, licenced under the GNU GPL
Download Available in 14 languages
Download Runs on Windows, Mac OS X, and Linux"

"A no-fuzz Windows client for Twitter. A global shortcut key to bring it up anytime. A simple text box for adding your update and quickly submitting it by Ctrl+Enter. It also has separate link box to enter URL that goes ...

"Snitter is "Snook's Twitter": an Adobe AIR-powered application for twittering. Twitter let's you post small 140 character messages letting people know what you're up to.

Snitter is made on the Adobe AIR platform w ...

"Sociagami allows you to manage your multiple social network accounts from one beautiful Windows application. Now you don't need to login into separate websites anymore. Use Sociagami to get your latest messages, comment ...