Table: Libre Mobile OS Alternatives to Android.

Project Core Graphical Backend User Interface Applications Framework Main License Requires Proprietary Components Flagship Device
FirefoxOS Android/b2g GAIA Firefox HTML5+JS MPL Yes Geeksphone Keon/Peak
Ubuntu Touch Android/Ubuntu Mir Unity 8 Qt 5 (C++/QML) GPL Yes Nexus 4
Maemo Debian/Maemo X11 Hildon C+GTK ? Yes Nokia N900
MeeGo Maemo/Moblin X11 ? Qt 4.7 (C++/QML) GPL/LGPL Yes Nokia N9/950
Nemo Mer (MeeGo evolution) Wayland Lipstick Qt 5 (C++/QML) GPL/LGPL Yes Nokia N9/950
Plasma Active Mer (MeeGo evolution) Wayland Plasma Qt 5 (C++/QML) GPL/LGPL Yes ?

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