Now a days, Open Source market is growing in a fast pace, Symbian is one of the most popular OS for mobile devices and smartphones. It’s developed by Symbian Ltd which was acquired by Nokia in 2008 and established a new foundation called Symbian foundation.
The Source Code of Symbian OS ( with its associative user interfaces S60,UIQ and MOAP(S) ) is open and free to use. Versions S60, S40 and others are developed under the EPL (Eclips Public Licenses) which are free and Open Sources around the world. Nokia based organization that maintains all power, took a decision to increase their popularity.
Symbian OS is used by