Android Android is an operating system for mobile devices such as smartphones and tablet computers. It consists of a kernel based on the Linux kernel, with middleware, libraries... Free Open Source Android Android Tablet ARM support Add a feature 779 Like
iOS iOS is a mobile operating system developed by Apple Inc. and distributed exclusively for Apple hardware. It is the operating system that powers iPhone, iPad and iPod... Free iPhone iPad No features added Add a feature 106 Like
Sailfish OS Mobile-optimized with the flexibility, ubiquity and stability of the Linux core and a cutting edge user experience built with the renowned Qt™ platform. Free Open Source Self-Hosted Minimalistic Add a feature 40 Like
Plasma Mobile Plasma Mobile turns your phone into a fully open hacking device, just like a PC. You can join us to start building new mobile experiences now. Key features: Libre... Free Open Source Linux No features added Add a feature 23 Like
Tizen OS Tizen is an open source mobile and device operating system based on Linux developed by Samsung and Intel. It can support programs written with Samsung’s Bada SDK as... Free Open Source Linux Lightweight MultiTouch Multitasking Add a feature 20 Like
OxygenOS The new operating system from OnePlus, based on Android. OxygenOS is light and essential with subtle, useful features. Free Android Customizable Root required Add a feature 14 Like
B2G OS B2G is a community maintained open source operating system for smartphones, tablets, smart TVs and other connected devices. The project was started in 2011 and is based... Free Open Source Self-Hosted No features added Add a feature 7 Like
Astian OS Astian OS is an operating system that is based on the discontinued Firefox OS, development by Astian Foundation, thus allowing support for mobile devices, TV's, and... Free Open Source Self-Hosted Scalable Add a feature 5 Like
QtMoko QtMoko is debian distribution for Linux based SmartPhones, like Openmoko Freerunner and Goldelico's GTA04 phone. Phone and user interface is based on QT Extendeded... Free Open Source Linux Self-Hosted Based on Debian Add a feature 6 Like Discontinued The project seems to be no longer developed. Last version, v58, released in December 2013, can be still downloaded from SourceForge.
Fairphone Open alternative, open source version of Fairphone OS, built by Fairphone, that puts transparency and ownership in the spotlight. Free Open Source Android No features added Add a feature 2 Like
AOSP Extended An AOSP based ROM which provides stock UI / UX with various customisation features along with the Substratum theme engine. The project has been made by cherry picking... Free Open Source Android No features added Add a feature 1 Like
webOS Open Source Edition webOS is a web-centric and usability-focused software platform for smart devices. Free Open Source Linux No features added Add a feature 0 Like
