Gwibber. Twittaré. Turpial. Polly. Choqok. Pino. Qwit. Thanks to Ehtyar, now we have win32 builds of the latest version: The latest version of Qwit is 1.1-pre.
If everything will be ok, it will become 1.1. This version has some minor bugfixes as well as experimental OAuth support for Twitter. Also, because of OAuth, this version depends on QOAuth ( which in turn depends on QCA. Twitux.