What are some alternatives?
When comparing Gnome Clocks and Date Reminder, you can also consider the following products
Free Alarm Clock - Free Alarm Clock is a free, full-featured and user-friendly computer alarm clock for Windows.
Hourglass - Hourglass is the most advanced simple countdown timer for Windows.
ClocX - ClocX - freeware analog clock for Windows desktop with many features like calendar, alarms, skins, antialiasing and transparency.
Free Countdown Timer - Free Countdown Timer is a free, full-featured and user-friendly countdown timer for Windows
Talalarmo - Minimalistic android alarm
CookTimer - CookTimer is a simple cross-platform countdown timer that helps when cooking, making tea or eggs.