Twicca - Twicca is a Twitter client for Android that is simply awesome. Features: * Notification
Janetter - Janetter is a Twitter client application. Faster, smarter, and more powerful.
Tweeticide - Tweeticide – Delete All Tweets is a commercial app that enables you to delete all of your tweets at once.
YoruFukurou - YoruFukurou (NightOwl) is a Twitter client for Mac OS X, designed for Twitter addicts.
Plume - App for writing documents, scripts, books and more.
Smart Post - Smart Post: Schedule Media is an all-in-one and feature-rich scheduling application for Twitter and Facebook.