Tweetie, the popular iPhone Twitter client, is about to land on the Mac. A longtime user of Tweetie, I was excited to see Macworld’s “first look” at the upcoming software:

Tweetie sports a healthy dose of visual flair without trying to get you drunk on whooshing around. Clicking between your friends’ tweet list, mentions, and direct messages, for instance, will quickly slide the current list up or down to make way for the new one. Clicking the icon of a second account in the left sidebar will slide it up to the top of the window and reveal its own buttons for mentions and direct messages. Double-clicking a reply will employ a fancy fade-zoom, revealing a list of all the back-and-forth tweets by participants. For a functional UI finish, small blue badges appear next to the timeline, mentions, and direct message sections to inform you of new messages. They also appear below the icons for your other accounts, so you know whether it’s worth switching over.

From the video on the developer’s website, it looks like Tweetie acts more like iPhone software than Mac software, which is fitting - it is the first application that I know of to be developed on the iPhone first, then ported to the Mac.

Tweetie will be available on Monday at atebits.com