Project Sandcastle is described as 'Linux with X windowing system and Android on the iPhone' and is a Mobile OS in the os & utilities category. There are more than 25 alternatives to Project Sandcastle for a variety of platforms, including Linux, Android, Linux Mobile, Android Tablet and Self-Hosted apps. The best Project Sandcastle alternative is Android, which is both free and Open Source. Other great apps like Project Sandcastle are LineageOS, /e/, Ubuntu Touch and Replicant.
Open source Linux-based platform designed for smartphones, tablets, netbooks, automotive infotainment, and smart TVs, offering scalable compatibility, advanced multimedia, touch support, Application Compatibility Layer for Android apps, 3D UI, and multitasking.
United States
Ubuntu Touch is made and maintained by UBports. It is a free and open source mobile OS for you! Meanwhile we care about your privacy and freedom.
The new operating system from OnePlus, based on Android. OxygenOS is light and essential with subtle, useful features.
China
Xiaomi HyperOS is a proprietary operating system developed by Xiaomi. It's designed to provide an enhanced user experience through its unique features and functionalities. The system integrates seamlessly with Xiaomi's wide range of devices, creating a unified and...
China
KaiOS brings smartphone-like functionalities to affordable phones: the KaiStore for apps. Video calls over 4G. Mobile payments through NFC. Even dual-SIM support.
United States
webOS is a web-centric and usability-focused software platform for smart devices. The operating system has constantly evolved, passing through its journey from Palm to HP, and most recently to LG Electronics.
South Korea
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 other devices. Astian OS is completely free and open.
Chile
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 formerly known as Qtopia..
Czechia
EU
Oniro is an Eclipse Foundation project focused on the development of a distributed open source operating system for consumer devices, regardless of the brand, model, make.
United States
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 on the Linux kernel and Gecko rendering engine.
The major difference between Google's stock Android and OPPO's ColorOS is the latter's additional features. Such features include: customizable gestures for screen off, screen on, communication, a security centre, lock screen magazines, options for long screen shot...
China
