The companies have come together to provide developers with a single source of all the latest, quality and relevant information about HTML5, CSS3, WebGL, SVG and other Web standards. The platform will also offer tips and best practices on web development as well as web technologies. “We are an open community of developers building resources for a better web, regardless of brand, browser or platform”, notes the WebPlatform site.
The documentation present on the site will be licensed under the creative commons licensing scheme with the initial contribution coming from the member companies while subsequent code snippets, examples, and documentation is expected from visitors.
"Together we can continue to drive innovation on the Web to serve the greater good. It starts here, with you." the site reads further.
Google notes on its blog, "Web Platform Docs is a community-driven site that aims to become the comprehensive and authoritative source for web developer documentation."
[Update 09/10/2012@14:27 GMT] It seems that Apple is probably not part of the Web Platform as yet as the Stewards list does have Cupertino's name but the link doesn't take you anywhere.