WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.
Countdown Screensaver - A Mac screensaver for counting down to a date 🖥🕐
TreeSize - TreeSize tells you where precious disk space has gone to.
Timetaco - Create your own countdowns, as easy as 3, 2, 1
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.
Yonks - Day counter app for iOS & Android.