Twisten is Twitter for Music – Listen to the music being shared on Twitter in a free, continuous stream of songs. (more…)

Twitter Grader : Measure the power and authority of your twitter profile.

How much is your Twitter profile worth? The value is calculated with a Ph.D algoritm that is based on the public information available on your Twitter profile.

Backup for your Twitter posts.

Share your favorite videos quickly with short URLs. We let you track the visits and comments from the people that follow you on Twitter.

Cursebird is a real time feed of people swearing on Twitter.

Twonvert helps you say more with less characters. No need to struggle to squeeze words into your twitter posts. Convert / translate your tweets into shorthand language, slang, text message speak & common abbreviations then post to Twitter FREE!

TwitterSheep profiles your followers in a colorful tag cloud.

BubbleTweet let’s you add video to your Twitter page in seconds.

twitsay: Give your Twitter Account a Voice! Record up to 10 Seconds using your mobile phone.