Jailbreak iOS 8.1 it starts to become useful little by little, but of course you have to be patient until it is worth installing in your terminals. In the meantime, below is a list of tweaks that are compatible with iOS 8.1 jailbreak and they should work 100% correctly, but I can't confirm this for you unequivocally, so test them very carefully.
- A Best VoIP APP - Tinkle
- Battery Life
- BTStack
- Cydia
- Cydia Substrate
- f.lux
- File Manager
- FlipControlCenter
- iCleaner
- iCleaner Pro
- MobileTSS
- mxtube
- NewTerm
- OpenSSH
- OpenSSL
- powerapp
- PreferenceLoader
- Snes9x EX +
- Zeppelin