Flamingo for Twitter - Flamingo for Twitter is a bright and colorful Twitter client that comes with a simple interface.

Twicca - Twicca is a Twitter client for Android that is simply awesome. Features: * Notification

Tweeticide - Tweeticide – Delete All Tweets is a commercial app that enables you to delete all of your tweets at once.

Plume - App for writing documents, scripts, books and more.

Tweetbot - Sync your timeline across your iPhone, iPad, and Mac. Mute tweets by user, hashtag, tweet source, or keywords (including regex). 3rd Party support for image, video, read later, and timeline sync services.

Tweedle App - Notion is nice but sometimes all you need is an app like Tweedle.