twitt.it is a simple bookmarklet to tweet faster. On Twitter it adds a RT This! quick command to every tweet. On any other website it gets the selected text, bit.ly-es the url and redirect you to twitter.com ready to tweet. Click Here to visit Twitt.it

Its a new tool Twitter Directory with Twitter Lists – Search Twitter Lists, Businesses, Users, & Celebrities 

TwitComings Get relevant and real-time twitter reactions about your favorite events. Feel free to inform us about your events and let your followers be up-to-date by the events you join by your tweets. to visit TwitComings – sorry – the site was taken offline. TwitComings Get relevant and real-time twitter reactions

It’s a new tool Twitter ranking of the most recommended tweeps based on the #followfriday recommendations. Check who recommends you and who you have recommended. @followfridaycom Click here to visit FollowFriday.com

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TwitrPix Express for Firefox – A Mozilla Firefox add-on that lets you to share any photo from any web page (including sending an optional status update) directly from within Firefox. As the entire experience requires only 2 clicks and the user never leaves the web page they are on, there is no break in their flow. addons.mozilla.org/en-US/firefox/addon/twitrpix-express-for-firefox Click here to …

Twivert.com – an advertising network for twitter,  where advertisers can reach millions of twitter users and twitterers can earn money for tweeting. Twivert offers CPC advertising and much more. Click here to visit Twivert.com

Enter 2 twitter usernames and compare how many followers they have.

Gracts.com is an eco-social experiment.

See who you mention on Twitter,