Mozilla OS, Boot to Gecko, can run on a Motorola Defy

The ROM comes from developer m11kkaa. And although there is no video of it yet, it's said to be running well on a Motorola Defy. Apparently, the device can boot, the sound works, and the touchscreen works, but nothing else, so it really isn't something you'll want as a primary system. It also does seem to be an older version of the Boot to Gecko software, because the UI isn't quite a slick as you'd expect. 

We're hoping to see more success from developers with B2G, because it seems like a good idea. B2G is intended to leverage web development, but add in extra development options with OS-specific stacks. In a lot of ways, it's like what Google has been doing with Chrome and HTML5, but in the mobile world. 

source: XDA