An open-source browser extension that alerts you when you navigate to a website belonging to an organization whose employees are on strike. You can then click on the notification to learn more about the strike. You can also click on the extension's icon in your browser's toolbar to show a popup with a list of active strikes and links to more information.
The database of strikes: https://github.com/jamespizzurro/picket-line-notifier/blob/main/data/strikes.json