The tool above does one thing: it counts time and tells you. The pages below are the same tool set up for a particular job, with the numbers that job runs on — and every timing in those tables loads the timer in one click.
Countdown if you know how long the task should take, stopwatch if you want to find out how long it did take, and pomodoro if you want work and breaks alternating without having to think about it.
Nothing to install and nothing to sign into, and it works on a machine that is not yours — a meeting room, a hotel computer, a borrowed laptop. Once the page has loaded it keeps running even if the connection drops.
Yes, with no account, no trial and nothing to install. Your settings stay in this browser and nothing is uploaded anywhere.
The countdown is calculated from the wall clock, so the remaining time is still correct when you come back. The alert itself is played by the page, so it needs the tab to be open and the volume up.