An experimental Mac OS X desktop client for 37signals' Backpack Journal that lets you quickly change your status message, mark yourself as in or out, and add journal entries from the menu bar.
Requires MacRuby 0.5 beta 2.
37signals Menu authenticates using the system's shared cookie storage, so make sure you're logged into your Backpack account with Safari first.
You'll need to change the value of the BackpackAccountName property in Info.plist to your Backpack account's subdomain before building.