This is not really about game development, but I have created a tool, which I personally use all the time. I think it would be useful to others as well.

It does not require Administrative privileges to install, but you might get prompted in Install Microsoft IIS Express (which is the web server that hosts the timerapp files on your computer)

Timerapp is a website (web app) which runs on your computer locally, at the address “http://localhost:8080”. It is useful to have a bookmark to timerapp in your browser to help you stay productive at the office.

Download here: https://andreizilla.github.io/timerapp/