Palm© webOS™ is Palm’s next generation operating system. Designed around an incredibly fast and beautiful user experience and optimized for the multi-tasking user, webOS integrates the power of a window-based operating system with the simplicity of a browser. Applications are built using standard web technologies and languages, but have access to device-based services and data.
Palm webOS is designed to run on a variety of hardware with different screen sizes, resolutions and orientations, with or without keyboards and works best with a touchpanel though doesn’t require one. Because the user interface and application model are built around a web browser, the range of suitable hardware platforms is quite wide, requiring only a CPU, some memory, a wireless data connection, a display, and a means for interacting with the UI and entering text.
The user experience is optimized for launching and managing multiple applications at once. WebOS is designed around multi-tasking, and makes it utterly simple to run background applications, to switch between applications in a single step, and to easily handle interruptions and events without losing context.
You will build WebOS applications with common web development tools following typical design and implementation practices for Ajax applications. But your webOS applications are installed and run directly on the device, just as you are used to doing with native applications.
For information on how to get started please see: developer.palm.com