WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.

Gemini Photos - Clean up your Camera Roll

WizTree - WizTree quickly finds the files and folders using the most space on your hard drive. It scans the MFT (Master File Table) instead of crawling the entire disk which makes it very fast.

PickStackr - Organize and manage your camera roll

TreeSize - TreeSize tells you where precious disk space has gone to.

Flic - Flic is a wireless Bluetooth-enabled button that acts as a shortcut to many actions on your wireless phone or other connected device.