Add-ons

Saved Password Editor by Daniel Dawson

Adds the ability to create and edit entries in the password manager.

Password Exporter by Justin Scott (fligtar), Jorge Villalobos

This add-on allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.

Note: This add-on won't work in Firefox 57. It may eventually if the APIs to access passwords are implemented.

MinimizeToTray revived by Nils Maier

Minimizes windows into the system tray.

Element Hiding Helper for Adblock Plus by Felix Dahlke

Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.

Session Manager by Michael Kraft

Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.

Collector's Note This is one of my most loved add-ons. Saves your browsing sessions (windows + tabs), even after crashes.

RequestPolicy by Justin Samuel

Be in control of which cross-site requests are allowed. Improve the privacy of your browsing by not letting other sites know your browsing habits. Secure yourself from Cross-Site Request Forgery (CSRF) and other attacks.

Quick Locale Switcher by ppclick

Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.

UnPlug by h2g2bob

UnPlug is an extension which lets you save video and audio which is embedded on a webpage - it's a video download tool.

MinimizeToTray by Mook, Brad Peterson

Minimizes Mozilla windows into the system tray. Also includes a right clickable tray icon menu to further load only the windows you want visible...

Forecastfox Weather by Ensolis

Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.

Scriptish by Erik Vold, Nils Maier, others

The greatest user script engine on the Internet (a fork of Greasemonkey).

Linky by gemal

Linky will increase your power to handle links. ...

Collector's Note More link-opening options in the context menu when you right-click.

eCleaner by flasresizerdeveloper

Clears preferences left by extensions after uninstallation

Closy by gemal

Provides close all blank/duplicate tabs and Close all tabs to the left/right plus many other options.

CustomizeGoogle by CustomizeGoogle

CustomizeGoogle enhances Google by adding information and removing unwanted information.