Amazon Appstore - The Amazon Appstore is a place to purchase and download apps for your Android device.
Bitrise - Tens of thousands of agencies, startups and enterprise companies with mobile apps - including Runkeeper, Grindr, Duolingo and more - use Bitrise to automate their way to increased productivity & speed
Aptoide - Aptoide is a third party replacement for the traditional Google Play Store.
codemagic.io - CI/CD for mobile projects and Unity games. Automated releases to Google Play and App Store and no code signing headache guaranteed!
F-Droid - F-Droid is an interesting alternative for Android users who want to try something different and not have to use the Goole Play store all the time.
Appcircle.io - Mobile CI/CD Made Easy - Flutter, Android, iOS, and React Native