/e/

I love it! /e/ is based on Android (which is actually Open Source software) but stripped of its proprietary code and referrers to Google. There is no Google Play Services coming with /e/ and instead of the Google Play Store there's an alternative app store preinstalled: All Android apps I am using, are just working fine.
The whole thing actually just work as I am used from other Android versions.
/e/ is under active development and suggestions that I made to the developers are carefully listened to.
I am really happy with /e/ as it allows me to make sure that private data and addresses I store on my mobile device are not shared with advertisers. That's what I was looking for since many years.

As far as I know, /e/ is the most complete alternative to Google android because :

1. it's based on Android so it's potentially compatible with all existing Android app
2. it's been 2 years the developer team is working hard to remove all google data pumps from the code, replacing important features by alternative services like "internet check", DNS and other stuff in the core
3. it's almost compatible with 100 mobile phones
4. it's a complete open-source and privacy focused environment : all the default app are Open-source they have been designed to be able to sync with a cloud hosted by the organisation (5Gb free) or by yourself
5. About the cloud, it's based on nextcloud
   If your phone is not compatible and is about to die, you can buy an /e/phone directly on their website

On the good way to become a real alternative to Google Environment.
These are the default apps included in the OS:

• Mail, calendar, task, note, contact, photo gallery > synching with a Nextcloud instance hosted by the organisation itself (or you can host yourself if you want) you can get an email and 5Gb storage for free
• App Store, calculator, clock, weather, camera, sms, browser, music

All default apps, are privacy focused + opensource

/e/, a new project, is focused on privacy promotion and safety.
Awesome os.

I just love it. It feels like Android, it works like Android, but it one major advantage compared with 'normal' Android: There is no risk that private data like addresses, phones numbers, or your location is shared with any Google servers. /e/ enables you what is pretty rare on mobile phones: You decide just yourself what you do with your data.

The only real unGoogled Android (+ online services) available on the market