Blackra1n - (This is an OUTDATED jailbreaking method.)
3uTools - 3uTools is a most efficient iOS file and data management tool for Apple users.
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.
greenpois0n - Greenpois0n performs an untethered jailbreak for iOS 4.
sn0wbreeze - sn0wbreeze is an advanced jailbreaking tool that lets you build a custom IPSW ("iPhone...
unc0ver - The most advanced jailbreak tool.