Yasst is an amazing cross-platform (runs on Linux, MacOS X and Windows) Twitter client coded in Qt (don't worry - it looks great in GNOME!) which we initially covered HERE (including a video).
Yasst features multiple tabs with columns, multiple Twitter accounts, saved searches, lists, themes and many more.
Since we last wrote about Yasst, it got a lot of nice features and improvements, such as: many improvements to the Lists support, lots of Linux improvements (UI), drag columns to reorder, auto complete for user names and known hash tags and a lot more.
Download Yasst (For Linux, Windows and MacOS X)
Running Yasst in Linux is very easy: simply download and extract it, then double click the "Yasst.sh" file.
Thanks to Linux Freedom For Live for the update!