Evernote is a free note-taking application that allows users to easily capture and organize information of various types, including text notes, printed and handwritten text within images (or even from a blurry cell phone snapshot), clippings from other applications and more into what they call a "continuous roll of paper." All data is run through a series of recognizers that make any text within the various note formats accessible and searchable at any time.
One of Evernote's most compelling features is that it lets you capture or access data from a number of devices and platforms - supports Windows, Mac and a variety of mobile devices - and everything stays in sync across them all. There's also a web component that stores all your notes in a central location, making it a ubiquitous service you can access everywhere. You can tag items or add comments to remind yourself why you saved something and worry not as everything instantly becomes annotated and searchable.
This week Evernote received a new feature for Premium account members, which essentially enables the application to store any file you throw at it - instead of just text and images. This includes everything from Office documents and audio files to PDFs and just about any other document type you can think of. Everything will sync up in Evernote's cloud and be available to you on any of your devices. Files are capped to just 25MB per note, though, limiting you from attaching things like large video files.