Our API directory now includes 97 cloud APIs. The newest is the Yubikey API. The most popular, in terms of mashups, is the Twilio API. We list 335 Twilio mashups. Below you'll find some more stats from the directory, including the entire list of cloud APIs.
When the time comes to test how various implementations of different types of browsers actually work with a particular application, much trial and error still exist. Despite the rise of application testing services in the cloud, testing browser compatibility against a production application is still problematic. More often than not, when testing does occur, it’s against a replica of the application running in a different environment, being accessed by browsers that might not even have any of the plug-ins that the application may need to support in a production environment.