Gwibber - Gwibber is an open source microblogging client for GNOME developed with Python and GTK.
Earthquake - Terminal-based Twitter Client with Streaming API support. Only supports Ruby 1.9 and later.
Choqok - Choqok - KDE Micro-Blogging Client The name comes from an ancient Persian word, means Sparrow!
Tui - Twitter client based on mobile.twitter.com in menu bar. Features:
TweetDeck - TweetDeck is your personal browser for staying in touch with what’s happening now.
Echofon for Twitter - Download Echofon apk 3.1.3.3 for Android. Echofon for Android - A super clean Twitter app