Chrono Egg is a complete editor window with :
- a count down
- a chronometer with hours, minutes, seconds and even milliseconds
- a clock
Settings (colors, deadline) are stored locally in the project folder.
The chronometer can be paused and resumed.
There's count down presets : 4, 24, 48 and 72 hours (useful for gamejams), a month and a year, but you can pick precisely a date and time you want.
Source included.