checkra1n - Jailbreak for iPhone 5s through iPhone X, iOS 12.0 and up
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.
unc0ver - The most advanced jailbreak tool.
Aptoide - Aptoide is a third party replacement for the traditional Google Play Store.
iMazing - iMazing lets you transfer music, files, messages, apps and more from any iPhone, iPad, or iPod to a computer, Mac or PC. Manage and backup your iOS device simply without iTunes. (was DiskAid)
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