From the creators of the slowest and crashiest browser I've ever used comes an all new Android experience! Mozilla has developed a FireFox Os custom launcher so you can experience the upcoming operating system on your device. The OS has previously been flashable on various devices, but the general public has yet to be able to test out the new OS.
The experimental app works like most launchers hiding your current Android overlay. You see the Firefox overlay instead. I'm sure there is much more to the FireFox OS than a simple launcher, but this gives you the overall look and feel of what the complete product will be. The launcher features a handful of Firefox web apps. Some features of the FireFox OS include Add ons, Private browsing with tracking protections, and pin the web.
It should be noted that this is still in testing and is not a final product. It will have bugs. FireFox's own task manager, and navigation may interfere with your current Android OS. There is no native back button. If you feel the need to give this a try now head to the link below for the download.
FireFoxOS2.5.apk