EarTrumpet - Volume Control for Windows
TweepsBook - A better bookmarking tool for power Twitter users that you can use to filter, organize and bookmark tweets on your liking.
Volume2 - Volume2 is an advanced Windows audio mixer, a complete replacement for the standard Volume Control.
Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.
Sound Control - App-specific volume control
Tweetflick - Save, organize & find Tweets to get the most out of Twitter