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
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.
Free time calculator - How much free time do you have remaining?
TreeSize - TreeSize tells you where precious disk space has gone to.