Symbian OS is now open and free

Another advantage of Symbian is that developers will regularly publish a platform development plan, Lee Williams noted.
The Symbian initiative was launched in June 2008, when Nokia announced that it would buy the rest of the code from other companies and transfer the OS to the Symbian Foundation. Currently, there are over 330 million Symbian phones in the world. They are produced by Nokia, Samsung, Sony Ericsson, Fujitsu and Sharp.
News in the original in English.