Janetter - Janetter is a Twitter client application. Faster, smarter, and more powerful.
How Long to Read - Find out how long will it take you to read that book
YoruFukurou - YoruFukurou (NightOwl) is a Twitter client for Mac OS X, designed for Twitter addicts.
Weglot - Translate your website instantly, no code required
Talon for Twitter - Elegantly designed, ad-free Twitter experience for Android
Wordcounter for Google Docs - A real-time word count and milestone markers in Google Docs.