Pideaky - Point of sale system for corner shops in Latin America
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.
Square Register - A fully integrated point of sale (POS) system 💰
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
Placer.ai - Unprecedented visibility into consumer foot-traffic
APKMirror - Android Market and APK Downloads