Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.

Countdown Screensaver - A Mac screensaver for counting down to a date 🖥🕐

Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.

Timetaco - Create your own countdowns, as easy as 3, 2, 1

Hubstaff - Simple yet powerful employee work tracker with screenshots, timesheets, billing, in-depth reports, and more. Understand productivity issues and act on them.

Countlit - Create and share beautiful countdowns to anticipate the best moments in life!