Shift+LeftClick XUL Requires Restart
This simple addon has only this functionality, nothing else: it opens links in a new active tab with Shift+LeftClick (left mouse button click).
Better use https://addons.mozilla.org/ru/firefox/addon/shiftleftclick-opens-links-in-/ for FireFox.
Style the web your way- provides a GUI that allow web users to change the look-and-feel of arbitrary web pages to something more pleasant and accessible.
No LDS Footnote Letters Requires Restart
Removes only the superscript letters of the footnotes but leaves the links in the scriptures at lds.org
globalChrome.css Requires Restart
Provides global user stylesheet.
Hide Option Pane Requires Restart
Provides ability to hide option panes.
Pic Zoom Requires Restart
Zoom in and out of any image on a page
A full featured color selector tool, to work with colors, and easily find the colors you want.
Switch Message Colour Requires Restart
Adds a Toolbar-Button to Thunderbird to switch between the mails' original colouring and your user defined colouring.