greenpois0n - Greenpois0n performs an untethered jailbreak for iOS 4.
oandbackup - Make backups of selected apps on your device and restore from those backups.
3uTools - 3uTools is a most efficient iOS file and data management tool for Apple users.
Super Backup & Restore - Super Backup & Restore app allows users to backup all their stuff such as pictures, videos, apps, text messages, contacts, call history, and calendar data, etc.
Blackra1n - (This is an OUTDATED jailbreaking method.)
Tenorshare WhatsApp Transfer - Transfer/Backup/Restore WhatsApp on iPhone/Android with One Click