Ringmark
Good to see Facebook putting pressure on the mobile manufacturers to standardise their HTML5 implementations
Try it here http://rng.it
Facebook today addressed three challenge areas that make it hard for developers to build apps on the mobile web: app discovery, browser fragmentation, and payments. As part of the second one, Facebook released Ringmark, a new mobile browser test suite, which it developed with open web technology company Bocoup. Facebook will soon open source it, publish it on GitHub, and donate it to the W3C.
The test suite for mobile browsers helps you, the developer, understand which mobile browsers support the functionality your app needs, such as orientation lock for games or camera functionality for social apps. Facebook says it is comprehensive, fair, and tests the feature sets which developers really need.