bash twitter/identi.ca ididocy, a command line client for twitter and identi.ca
Buzzbird is totally free (as in beer and freedom). There are no advertisements, and it is completely open-source. It is built on Mozilla’s XUL platform, the same technology that is used in the...
KDE Micro-Blogging Client, Currently supports Twitter.com and Identi.ca services.
Provides an omnipresent versatile search interface. It has a Twitter and identi.ca backend that let you post updates to your Twitter and/or identi.ca account.
Works with identi.ca and any other StatusNet install. Twitter dropped support for us, as oauth support is extremely unlikely.
Works with both Gnome and KDE. A launcher (inspired by Quicksilver for Mac OS) with support for sending and receiving posts to/from identi.ca and Twitter.
Works with identi.ca and Twitter. Merges the timeline into one.
An Identi.ca client written in python for the n900 and other maemo devices. Also runs admirably on desktop Linux.
Hotot, is a lightweight & open source microblogging software, coding using Python language and designed for Linux. It depends less but supports more. It's been developed actively and still in...
IdentiCurse is a simple but powerful client, primarily written for Identi.ca, but should theoretically work with any instance.
StatusNet Desktop is a dedicated multi-platform Open Source client for connecting to StatusNet installations.
Turpial is twitter client written in Python. Light, fast, fully functional and integrated to the user desktop.