Clonezilla - Clonezilla is a suite of software that's designed to allow you to back-up and image new hard drives with your data.
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.
Macrium Reflect - Macrium Software - the creators of Macrium Reflect backup, imaging and cloning software.
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
AOMEI Backupper - AOMEI Backupper is a software created to help a person backup, restore, clone, and sync their entire Windows system.
APKMirror - Android Market and APK Downloads