But as more consumers choose Android, some developers began creating Android-only apps, while others recognized the importance of cross-platform development.

FORBES: The 10 Most Important Events In Mobile Gaming In 2011

The game will launch on the XBOX 360 and PS3, and Bungie has not yet revealed any plan for cross-platform development.

FORBES: Bungie's Destiny Unveiled

AppUp focuses on HTML5 on its platform to make cross-platform development easier.

FORBES: Intel Capital Bets $100 Million On AppUp Platform

Novell is providing us with innovative, cross-platform development tools that enable us to reduce the cost and resources required to create mobile applications.

ENGADGET: Novell's Mono tools let devs create .NET apps for Android devices

But cross-platform enterprise app development is quickly morphing from a nice-to-have to a gotta-have feature.

FORBES: Managed Mobility Gets Even Better, Exposes Dithering IT Managers

Today more than 50 million players enjoy our games, a number that grows daily through a diverse business model that includes direct-to-consumer websites, social game development, and cross platform publishing, licensing, and technology.

FORBES: Connect

Cutting through all the talk about what will happen to its troubled Symbian operating system and future OS, Meego, new Chief Executive Stephen Elop said Nokia would streamline its development strategy for both, centering on a cross-platform framework called Qt.

FORBES: Elop Leads Nokia's Fight Back in Smartphone War, Wields Qt