Firefox OS: Open-source smartphone OS that uses the Open Web as a platform for mobile

An unexpected revival of Firefox OS

Mozilla and Partners Prepare to Launch First Firefox OS Smartphones!

13 Open Source Mobile OS Alternatives to Android

Announcing the Firefox OS Developer Preview Phone! - Mozilla Hacks - the Web developer blog

Mozilla to launch mobile phones with Firefox

13 Open Source Mobile OS Alternatives to Android

ZTE Open is the first official Firefox OS phone (hands-on) - The Verge

13 Open Source Mobile OS Alternatives to Android

Mozilla announces an end to Firefox OS smartphone development - Android Authority

Firefox gets into the smartphone business