CertRemainTime
Check when you'll need to re-sign your jailbreak
PowerApp
Reboot, Shutdown, Respring, go into Safemode
iCleaner
The first real iOS system cleaner & optimizer
Filza File Manager
File Manager for iPhone, iPad, iPod Touch. Supports iOS 7+
Apps Manager
Tool to WIPE, BACKUP, RESTORE AppData for installed Apps