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Zagg Zaggmate keyboard dockZagg website
Zagg, known mostly as the maker of the invisibleSHIELD advanced screen protector, has produced a keyboard-case combo. It's a tough case made of aircraft-grade aluminium that also packs-in a Bluetooth keyboard. When not acting as a simple protector, it'll hold the iPad 2 up either in portrait or landcape orientation - turning it into a laptop of sorts.
All this added functionality, and it only increases the thickness of the iPad by an eight of an inch, or around 3mm. Impressive stuff. At a hundred dollars, it's significantly more expensive than the official iPad 1 keyboard dock though.
Apple wireless keyboardApple Store
Apple has ditched the keyboard dock for the iPad 2, but the wireless keyboard will work with it just fine. Based on the keyboard style of the Mac, it is compact and very easy to type away quickly on. Like all iPad compatible wireless keyboards, it uses Bluetooth technology to communicate with the iPad 2.
The keyboard is powered by two AA batteries and employs power conservation techniques to eke out the maximum number of days of usage. We haven't had a chance to test drive the keyboard with an iPad 2 yet ourselves, but it should last for weeks when used occasionally.
Kensington KeyfolioRetail link
The Kensington Keyfolio marries a classy faux-leather case with a Bluetooth keyboard, giving you laptop-like functionality on-the-go. Unlike the original keyboard dock, designed for the first iPad, the Keyfolio holds your iPad in landscape orientation, giving it that real laptop feel.
Like any case worth its salt, the Kensington Keyfolio gives you access to all the side ports and controls of the iPad 2 thanks to carefully-employed cut-outs. The device itself is a re-branded OEM product - not quite as high-quality as the carefully-engineered Zaggmate, but worth it if you want that Folio style with a keyboard in tow.