CopperheadOS — Secure(-ish), Non-Google Android.
Including my recommendations for getting the most out of Google-Free Android.
http://lunduke.com/2018/03/06/copperheados-secure-ish-non-google-android/
This episode of the #LundukeShow brought to you by PogoLinux, System76, LulzBot, & Nerds Like You.