Notefox is an open-source browser add-on for taking notes on websites: a note can belong to a single page, a whole domain, a sub-path or every site, with rich text formatting, tags and folders. Notes can be opened as movable sticky notes on the page and managed from a dedicated All notes page with search and filters, while an optional free Notefox Account syncs them across devices. It is available for Firefox (including Firefox for Android), Chrome and Edge.
Recommended by Firefox
Featured on Chrome Web Store