Thanks to huge improvements in web services and application interface design, the user experience of legacy enterprise applications can readily be reengineered for touch.

FORBES: The Real Mobile Revolution Isn't About Mobility

Jolicloud is a stripped down operating system that, instead of running software, connects to Web services using their application programming interface (API).

FORBES: The Disposable Operating System

Push notifications are still the domain of text messages and native applications, and as such Tran is waiting for the W3C and other standards bodies to incorporate the relevant API (application programming interface) for web technologies.

FORBES: It's Yet Another Mobile Messenger, Except Chorus.im Wants To Be In Your Browser

MOG's free service takes advantage of its recently unveiled HTML5 web application, which comes out of beta today, featuring a slick new interface and advanced features such as integration with Facebook for personalized recommendations.

ENGADGET: MOG FreePlay brings 11 million songs to the web gratis, makes you work for free tunes

Five years later, in version 3.0, it added an application programming interface (API) for its themes making it an effective platform for developing web applications as well as pure content sites.

FORBES: WordPress @9: Matt Mullenweg on 'Radical Simplification' for Mobile and Social

The UrtheCast web platform will combine a consumer centric website, mobile application for smart phones, and an open Application Program Interface (API).

ENGADGET: UrtheCast to stream live HD footage of Earth from ISS, like Stickam for space