Twitter-Athletes is a directory of verified professional athletes on Twitter.
This is a directory of YA authors, characters, and reviewers, as well literary agents, on Twitter.
RetweetFollow lets you search by keywords in URLs tweeted and to easily follow the retweeters.
TwitLuv.in – find how compatible you are with your friend and follower. Tweet the mathing results and get entertaining retweets from your followers. to visit TwitLuv.in sorry it is offline.
Twitdrunk.com – Official home of the “drunk tweet” – Drink, Tweet and Be Merry. Find some Entertaining things on twitter. to visit Twitdrunk.com sorry it was taken offline and cannot work, get drunk yourself instead.
Want to win free gifts? Then tweet 4 Gifts is the app for you.
Power Twitter – Firefox add-on. Makes Twitter Better. Power Twitter adds features to the Twitter Web interface including:
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
This tool helps you to track food and count calories, carbs, fat & more with FitClick Diet Tweets.
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
Geo (location based) twitter user search.
duplicate post – see here
See who you mention on Twitter,