So Twitter is our new fun obsession and what better way to enjoy a newfound hobby is there than to find all the free and open source software you can for it!? NONE! Twitterrific is a light and fun little application that lets you easily publish “tweets” to your Twitter account or read tweets from your Twitter contacts, all while stylishly occupying a small spot of real estate on your Mac’s desktop. Let your friends know what level your World of Warcraft character is or how badly you want the iPhone you’re reading about without having to leave your desktop!

Download: Twitterrific | Twitter