Twitter avoids the need to open a browser window and visit Twitter so that you can read friends’ tweets and public threads, whether in collapsed or expanded mode.
Among the new features found in version 2.1, it is worth highlighting the support of Keys for connecting multiple Twitter accounts, support for the open source notification system Growl and support for the RSS news reader NetNewsWire. Tweets can be processed with AppleScript and you can drag tweet URLs into other applications. The settings panel has been reorganized, the windows are customizable with transparency, shadow, and font size, and new hidden preferences (easter eggs) have been added.
Twitterific 2.1 also supports multiple URL linking improvements among other changes.
Twitter requires Mac OS X 10.4 and access to the Twitter service.