Here's a site I'd really like to see: a showcase for software that takes advantage of new developer features for the Mac OS and iPhone platforms (and maybe others, too).
The recent software updates for both the iPhone and Mac OS are heavy on features for developers, like Core Location & Grand Central Dispatch in Snow Leopard, in-app purchases on the iPhone, &c. (this is a key part of Apple's marketing, even). And when browsing the iPhone app store, applications that've been tested in the 3.0 software are specially flagged as "tested on iPhone 3.0". But what about applications that actually make use of all of the new developer features? That is, applications that are optimized for the new platform?
The promise of an update like Snow Leopard--and, to a lesser extent, the features in the new iPhone 3.0 SDK--is the types of new applications that can be built upon the new platform. Reviews of the new operating systems are heavy on information about the new developer features, but light on actual examples of applications making use of those features. And, as a potential developer for these platforms--but even moreso, as a very interested user--those are the apps that I'd love to see.
My current favorite example of such an app: Clarke, an app for updating your location on Fire Eagle, will soon support the Core Location framework for gathering location data (currently, it uses Skyhook data). That's almost neat enough for me to gather the courage to upgrade!
Does a site like this exist?