Tweeterized
Create a dynamic Twitter signature that you can use on forums or social networks.

BubbleTweet - Create a 30 sec video in a floating bubble video player on your Twitter page. This is a very cool and innovative Twitter application. Greet your friends and new followers in a short video :).

Twitemerature - Find out how hot you are! 

Mr. Tweet - Get recommendations of who you should follow.

TweetChat - Create rooms in Twitter to chat about everything you want.

TweetBeep - Find out who talks about you or your website!