firefox-addons

Provides an pop-up menu, displaying the bookmark's path, and allowing quick moves to a choice of folders.

Focused browsing is a web extension that helps you focus on your creative and professional goals by hiding distracting web elements on popular social websites.

https://org.grey.software/focused-browsing

The project is not for nor against Mozilla and this is by no means meant to smear Mozilla or their products - or their Dev Team - it is an overview.