iPhone App - Twittion
Twittion is a Twitter client that makes twitter communication easier and faster by providing a concise and logical user interface layout.

The main goal of the design of the app was to avoid weighing down the user interface with clutter and instead focused on giving the user access to features that they need to read and tweet messages from their iPhone or iPod Touch.

Twittion includes the following features: draft message creation, built-in web browser to view embedded links, the ability to set the number of tweets to download, oAuth authentication, Twitpic support and dozens of other features.