Tyrs is a Twitter and Identi.ca client based on ncurses. It is easily configurable. It allows you all basic manipulations such as searching, directly sending a message, and mentions. Tyrs let you configure all shortcuts, colors, and more parameters.
Choqok is a quick and efficient micro-blogging client for the K Desktop Environment. It currently supports the Twitter.com and Identi.ca services. The name comes from an ancient Persian word that means sparrow.