This little app shows the number of unread GitHub notifications in macOS menu bar.
There are other similar apps, but they either run a full fucking Electron, or have too many other features and look busy.
- Download and install xbar (beta version is fine). It's a small app that allows you to add output of any script (Bash, Python, JS) to the menu bar.
- Launch it, go to the menu, enable "Start at Login".