Earthquake - Terminal-based Twitter Client with Streaming API support. Only supports Ruby 1.9 and later.
Cato Social Network - Become Cato. Post Meows, get Not So Anonymous Messages, connect with other Catos & grow your online social network.
Choqok - Choqok - KDE Micro-Blogging Client The name comes from an ancient Persian word, means Sparrow!
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.
TweetDeck - TweetDeck is your personal browser for staying in touch with what’s happening now.
Mastodon - Mastodon is a decentralized, open source social network. This is just one part of the network, run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome!