Carousel is a gorgeous Instagram Mac app for your desktop.

Carousel, which sells for $4.99 on the Mac App Store, includes the standard photo viewing and commenting features, but it also packs a number of nuances — double-click photos to enlarge and save them to iPhoto for instance — that make it a near picture-perfect interpretation of Instagram in desktop form.

We love the four theme options, keyboard shortcuts and the growl notification options, but its the simple and subtle design touches that make it a standout application.