Countdown Screensaver - A Mac screensaver for counting down to a date 🖥🕐
WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.
Countdown to Inbox Zero - Always respond on time
TreeSize - TreeSize tells you where precious disk space has gone to.
Free time calculator - How much free time do you have remaining?
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.