Facebook has unveiled App Center today: an “App Store” for iOS and Android that features both native and web apps that utilize Facebook integration in some way. The App Center features about 600 apps, and Facebook will offer personalized recommendations, presumably based on its social knowledge of each user. App Center will be featured prominently in mobile on iOS and Android, Facebook’s full desktop site, and on Facebook’s mobile site.

Facebook is adding a top-level “App Center” link to the lefthand sidebar of every desktop Facebook page. Once there, users can browse for apps in categories or search — and having found an app, they’ll see your standard screenshots and descriptions. On mobile, you can directly launch the appropriate app store for installation. From the desktop, you can click a “Send to mobile” button to get a link for installation as well.

It should go live for U.S. users at www.facebook.com/appcenter and within Facebook app updates soon.