CatThief

This Firefox add-on adds a toolbar button that enables users to easily access the Preferences panel.

Customize the location of the Options Button in Thunderbird with the "Simple Options Button" add-on. It supports multiple languages: en-US, de-DE, es-ES, fr-FR, it-IT, nl-NL, pl-PL, pt-BR, ru-RU.

Simple Clear Button is a Firefox extension that offers users the ability to open the Clear Private Data panel from the browser's mainframe. Users can customize the extension to be placed anywhere they want by dragging it from the Customize Toolbar window.