Aptoide - Aptoide is a third party replacement for the traditional Google Play Store.
Cydia - An alternative app store for jailbroken devices.
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
Zestia - Zestia is a mobile app designed to assist you in organizing your hectic schedule, social life, and professional persona.
Amazon Appstore - The Amazon Appstore is a place to purchase and download apps for your Android device.
JazzMyApp - Let JazzMyApp surprise you with amazing apps everyday. Try it out yourself.