iNoJB - iNoJB, formerly iNoCydia, is an amazing Cydia alternative requiring no jailbreak!
Cydia - An alternative app store for jailbroken devices.
Apple App Store - Install apps on your iDevice via the App Store.
Hydia - Hydia is a non-jailbroken version of cydia wich allows you to customize your device in many ways.
Sileo - An APT package manager for jailbroken iDevices.
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