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)
iToolab FixGo - When your iOS device gets stuck on the white/black screen, Apple Logo, Recovery/DFU Mode, restart loop, is bricked, as a frozen screen or simply won’t start, iToolab FixGo is the ideal solution for you.
checkra1n - Jailbreak for iPhone 5s through iPhone X, iOS 12.0 and up
AnyFix - AnyFix is a tool that provides a solution for almost any iOS issue you may come across, from your device crashing or not syncing accounts to having trouble with your connection or speaker/headphone jack.
Blackra1n - (This is an OUTDATED jailbreaking method.)
iMyfone iOS System Recovery - Totally Repair Your iOS System without Data Loss