WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.
Dr.Fone Toolkit - dr.fone toolkit has all the tools you need to manage your iOS or Android smartphone.
TreeSize - TreeSize tells you where precious disk space has gone to.
SynciOS Data Recovery - Best iPhone data recovery software retrieves lost or deleted data like contact, whatsapp, message, photos, video for iPhone 6 Plus/6/5s/5/4S/4, New iPad, iPod Touch.
SpaceSniffer - SpaceSniffer is a freeWare (donations are welcome) and portable tool application that lets you understand how folders and files are structured on your disks.
EaseUS MobiSaver - Free iPhone data recovery software can quickly recover iPhone data including contact, message, photos, video. EaseUS MobiSaver Free: recover iPhone data easily, safely and freely.