WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.
Aiseesoft FoneLab - Fonelab iPhone Data Recovery can recover lost/deleted text messages, iMessages, photos, WhatsApp, contacts, call history, video/music and notes from iPhone safely and quickly.
TreeSize - TreeSize tells you where precious disk space has gone to.
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.
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.
Tenorshare 4uKey - Unlock iPhone Apple ID and Locked Screen in Minutes