Firefox for Android is now open for developers to test, according to CNET.

The design keeps elements of the smaller-screen smartphone version tab switching that can pull out from the left side and other options that can pull out from the right side. But with the bigger screen, it also adds forward and backward navigation buttons, an address bar, and buttons for reloading and bookmarking.

Mozilla has begun focusing on Android tablets - in particular, those using the Honeycomb version of Google's mobile OS. Mozilla is banking on Android as a way to keep its browser and open Web mission relevant in the fast-growing mobile world.