GrapheneOS

GrapheneOS is an open-source, privacy and security-focused mobile operating system for select Android devices. It is designed to enhance the security and privacy of smartphones by hardening the Android Open Source Project (AOSP) and implementing various privacy-preserving features.

The OS is intended for users who prioritize strong data protection and seek to minimize their digital footprint. It provides a more secure and private alternative to stock Android, offering features like enhanced sandboxing, a hardened kernel, and privacy-focused default settings.