It's hard to believe, but Windows 7 is just turning one year old. And what an impressive first year the operating system enjoyed, receiving almost universal praise from critics and users alike. Of course, even the most nimble, secure, and versatile OS has room for improvement. That's why we're following up our popular "Best Windows 7 Downloads" with another assortment of essential apps and utilities, all designed to help you make your 7-powered PC even better. And believe it or not, they're all free.