There is serious momentum in these new smartphone OSes, yet it is already a crowded market.
Where things stand with Sailfish OS and Tizen | PCWorld
Ubuntu Touch OS heading to slew of smartphones, tablets | Mobile - CNET News
Sailfish OS makes the rounds, shows up in unexpected places (videos) - Liliputing
Tizen operating system officially unveiled at MWC
Sony jumps on the Mozilla bandwagon, will launch Firefox OS device in 2014 - The Next Web