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
Epom Apps - Epom Apps provides monetization platform for Android applications globally. Integrate just one SDK and start generating revenue right away.
APKMirror - Android Market and APK Downloads
AdMob - Earn more from your mobile apps using in-app ads to generate revenue, gain actionable insights, and grow your app with easy-to-use tools.
Worldfreeapps.com - Download Apk of Games and Apps for your Android Phone.
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.