Neowin reports about MetroStore Scanner, a third-party web service that enables anyone to browse the apps available in the new Windows Store. Microsoft does not have such a website available, the Windows Store can only be accessed via an app that only works on Windows 8 systems. You can give it a try over here.
Today, there's word that a third party group has created something that Microsoft has chosen, at least for now, not to offer the public. The MetroStore Scanner website allows anyone, even non Windows 8 users, to see which apps are in the Windows Store via one large database. It also allows anyone to search for any app made for any or all of the markets that Windows 8 is currently available for sale.
The website shows that, at the moment, there are 25,539 Windows 8 apps in the store. A report from another third party site made about two weeks ago claimed that the store had exceeded the 20,000 Windows 8 app milestone.