Symbian OS was designed for mobile devices, with associated libraries, user interface, frameworks and reference implementations of common tools, developed by Symbian Ltd. It was a descendant of Psion's EPOC and runs exclusively on ARM processors, although a non-productized x86 port existed.
Symbian Foundation, an independent non-profit organisation was established on June 24, 2008. The foundation began operating during the first half of 2009. Foundation membership is open to all organizations. Symbian OS and its associated user interfaces S60, UIQ and MOAP(S) were contributed by their owners to the foundation with the objective of creating the Symbian platform as royalty-free, open source software. The process of publishing the source code under the Eclipse Public License (EPL) was slated for completion in 2010.