If you own an iPhone, BlackBerry, or Android device, we really, really hope you already have Evernote installed. Why? Because it's one of the best note-taking services we've come across. You can jot down ideas, save full documents like images, PDFs, and even audio clips, and access all of it from any Internet-connected computer. The Chrome app does all of that with a clean, attractive, easy-to-use interface. It also gives you some browser-centric add-ons like the ability to take pieces of a webpage and clip 'em into a note. You need it. Download it.