Twitter Client for Linux
Gwibber : One of the most popular social networking clients.
Supported services: Twitter, Facebook, Identi.ca, Flickr, StatusNet, FriendFeed, Digg, Qaiku
Automatically shortens URLs when they are pasted
Optional support for spell-checking as you type
Multicolumn user interface for viewing multiple streams
http://gwibber.com/
Hotot : Popular microblogging client. Have a useful and nice gui.
Preview images
View geographic informations
Extensions support
http://hotot.org/
qwit : Cross-platform client for Twitter.
depends on Qt4 only
Kde native look
http-proxy support
twitpic support
URL shorteners support
http://code.google.com/p/qwit/
Turpial : Lightweight twitter client, written in python.
URL shorteners support
twitpic, yfrog etc. support
Low system resources consumption
User mute
http://turpial.org.ve/
gtweety : Interface language only czech. Development is stopped.
https://launchpad.net/~sliver17/+archive/gtweety
Pino 
:Pino is a simple and fast X11 client for twitter and identi.ca. It can perfectly integrate into your Gnome or XFCE desktop.
Hiding menu and panels
Default Gnome notifications of new tweets
Deleting your own tweets
Cache for userpics
Spell checking
URL shortening
http://pino-app.appspot.com/
Yasst : Cross platform twitter client.
Show or hide the tweet panel
Opens an internet feed tab, enter the URL of a web feed to populate
Multicolumn and tabs support
http://www.yasst.org/
pidgin plugin: pidgin-microblog, Pidgin-twitterstatus, Pidgin-identica-status.
http://developer.pidgin.im/wiki/ThirdPartyPlugins
Buzzbird : XUL based twitter client.
URL shorteners support
Menu to insert emoji in tweets
Conversation views
http://getbuzzbird.com/
Choqok :Choqok is a free/open source micro-blogging client for KDE.
Preview images from Twitpic, YFrog, img.ly, plixi, Twitgoo and TweetPhoto services.
Preview videos from YouTube and Vimeo services.
URL shortening
Flickr, ImageShack, Twitpic, Twitgoo, Mobypicture and Posterous photo uploading
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