This base is extended by Jolla with a custom user interface and default applications. The MeeGo legacy is contained in the Mer core in about 80% of its code the Mer name thus expands to MEego Reconstructed. The OS is an evolved continuation of the Linux MeeGo OS previously developed by alliance of Nokia and Intel which itself relies on combined Maemo and Moblin. 4.4 Community enthusiasts' ports to devices from other vendors.4.3 Devices from other vendors licensing Sailfish OS.3.6 Using Android software running on Sailfish OS.3.2 Public 'Early access' for beta testers and developers.