The base for Android's code is released for free to be modified by anyone.
Android (operating system) . Android 's source code is released by Google under an open source license , although most Android devices ultimately ship with a combination of free and open source and proprietary software , including proprietary software required for accessing Google services . An open-source license is a type of license for computer software and other products that allows the source code , blueprint or design to be used , modified and/or shared under defined terms and conditions .