Shadow is a clipboard utility for OS X. Nothing special about that, right? I mean, we covered a whole slew of good ones back in January. Hold on a minute, though, because Shadow puts a new twist on the classic clipboard-enhancement app: it lets you copy and paste across your network.

That's right: Shadow uses Bonjour to let you use your clipboard across all your networked Macs. It has a lot of other useful features that any modern clipboard app needs, too. Multiple clipboards come in handy for organizing or keeping things private. A nice, bezel-style UI keeps the interface from being too obtrusive.

Although it's in public beta, Shadow is already highly usable. It records your clipboard history automatically, and you can summon it with a hotkey or the menu icon. Navigating your saved items is easy, and you can do an easy one-button paste with the spacebar. If you already have a clipboard manager, Shadow might be good enough replace it. If you don't, it's a good place to start.