With URLy you can shorten long URLs (with bit.ly, goo.gl, TinyURL, 40 more), upload (Yfrog, Imageshack, FileSocial and more) and post the URL and a message to Twitter or forward it to other apps like Facebook, Buzz, SMS, Mail, etc. See blog for details.

This app allows you to send Text To Speech(TTS) Tweets...tweeting has never been so much fun, try TTSTweetrer to

Twimager solves the problem with most of the popular twitter image hosts opening non-mobile friendly websites on an android device.

TwitPic Share Online plugin for Android (TwitPic Share) is an Android application that enables you to upload-and-tweet photos to websites from any fellow application that has a Share command.