Rated 5 out of 5 stars

A comparison:
Quicknote: select text; rightclick; add note
QuickFox: select; rightclick; select notebook; add note
Quicknote has a side pane which is convenient for side by side editing.
QuickFox has the ability to add more notes and sync with web storage.
I think to manage lots of note, zim wiki or emacs org mode are better, you can include graphics and tags, as note add-on in firefox is better suited to be just a temperary storage, the quicker the better.

Suggestion: middle click on selected text to add note to a currently selected note, add a side pane to make comaring easier, maybe a dropdown menu to select note as the current note.

Thank you for this tool.

This review is for a previous version of the add-on (2.8.4.1-signed.1-signed).