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Samsung has finally released Tizen OS on a phone, something they've been planning on doing since 2012. Tizen has a strange, strange history, half Intel, half Nokia, half Samsung, supported by the Linux foundation for reasons unknown. Now apparently its making its debut in India on a budget phone.
Ars has a comprehensive review.
Intel: ++++----
Nokia: --++++--
Samsung: ----++++
(Sorry, I can't find a way to get preformatted text, so please copy/paste into a fixed width editor and adjust the spaces after the colons manually to understand the above)