Twitmatic – Real-time video search. Find the videos people are tweeting about.

appTracks: Web
appTags: real-time, search, trending topics, video

twitterfall – A waterfall feed to view top trends, custom searches and your own timeline in real-time.

appTracks: Web
appTags: feed, real-time, search, trending topics

TweetGrid – Create a Twitter Search Dashboard that updates in real time.

appTracks: Web
appTags: search, tracking, trending topics