Selenium is used for automating web applications for testing purposes, is developing the Selenium version 3 which will have Mobile WebDriver.
Although the WebDriver APIs started life as just a mechanism for automating web browsers, over the past few years it has been extended to also work on mobile devices.
As part of the Selenium 3 work, Selenium team have started working on a test suite to help ensure this level of interop between appium and iosdriver, and appium and selendroid. To kick start the process, the primary authors of each of those tools, as well as others including David Burns representing the Marionette project (Mozilla’s implementation of WebDriver for Firefox and Firefox OS) and Simon Stewart, the lead of the Selenium project have initiatewd the process of developing the mobile WebDriver.
Work has started on a shared test suite, hosted in a repo in the selenium project’s Google Code page.