What are some alternatives?
Aptoide - Aptoide is a third party replacement for the traditional Google Play Store.
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.
Google Play Store - Google Play Store is the official marketplace for apps, music, books, and other forms of media that are designed to be used on Android mobile devices. Read more about Google Play Store.
APK Pure - Download apk for Android with APKPure APK downloader. NoAds, Faster apk downloads and apk file update speed. Best of all, it's free
AppBrain - Grow your app business with AppBrain: Monetize, advertise and analyze Android apps
Amazon Appstore - The Amazon Appstore is a place to purchase and download apps for your Android device.