Cato Social Network - Become Cato. Post Meows, get Not So Anonymous Messages, connect with other Catos & grow your online social network.
Gwibber - Gwibber is an open source microblogging client for GNOME developed with Python and GTK.
Twitux - Twitux it's a free and open source GTK+ application for ...
TweetDeck - TweetDeck is your personal browser for staying in touch with what’s happening now.
X (Twitter) - Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.
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.