Reuters: The world's most popular smartphone OS, with about half of the market, has officially gone open-source. The announcement comes as the Symbian operating system has begun losing marketshare to rivals Apple and Google. It means that manufacturers will be able to use the Symbian code for free, as opposed to paying up to $15 per phone for proprietary code.
Nokia bought the Symbian code in 2008 and tasked an independent foundation with releasing the code on an open source basis. The Symbian Foundation finished the task early, saying, "Not only has this come four months ahead of schedule, but also represents 10 years of investment and billions of dollars worth of code."