TweepsBook - A better bookmarking tool for power Twitter users that you can use to filter, organize and bookmark tweets on your liking.
Maker Swipe File - 100+ high-performing Tweets to help you grow your audience
Tweetflick - Save, organize & find Tweets to get the most out of Twitter
Narrow - Narrow helps you build a targeted audience and increase your influence on twitter.
Twitter Bookmarks - Create shortcuts to your favorite users/tweets on Twitter
TweetPilot - Grow a relevant & responsive following on Twitter