Multi-Platform Mobile Environment Emulator: Ripple
When building mobile web apps, it is pretty hard to test and debug the applications in multiple platforms as each platform may require a different device.
Ripple is a multi-platform mobile environment emulator which comes as a Chrome extension and aims to ease this process.
It enables us to choose the platform (mobile web, PhoneGap, WebWorks, WAC, etc.) + the device(s) supporting the platform and can display how a given URL would look like with such a combination.
Also, Ripple displays detailed information about each device, the User_Agent used for loading the URL and has a "Geolocation" module that eases testing Geolocation-reiated apps.