Apple has published an extensive directory of web-based applications for the iPhone and iPod touch.

The directory is available now from the company's website. Applications are split into the following categories: Entertainment, Games, News, Productivity, Search Tools, Social Networking, Sports, Travel, Utilities, Weather.

The directory is currently featuring a Facebook application, which enables iPhone and iPod touch owners to access the social networklng service.

The directory can be visited using an iPhone or an iPod touch.