iPhone: In my experience, if there's anything worth than an invasion of aliens, it's an invasion of paper aliens. And that's exactly what happens in Inkvaders, an original and fun side-scrolling, Martian-blasting adventure game. The object of Inkvaders is to rid the World of aliens by blasting them with your gun. In order to help you, you also have a jet pack which lets you fly over the Martians.

Mac: If you've got more than one Gmail account and can't keep up with each one individually, then Notify is a handy menu bar extension. Notify allows you to keep track of several accounts at once within an elegant tabbed user interface. It allows easy access of your mail accounts - in a single click of the account you will be taken straight to your inbox and you'll receive a Growl alert for newly received mail.

Windows: Massive graphic suites are not always the best option. Lighter, smaller image editors are the most adequate tool for quick image optimization and retouch. One of them is Paint.NET, a free photo editor with support for layers and a bunch of special filters and effects that includes all the key features you'll need for quick image editing.