SmartProxy will automatically enable/disable proxy for the sites you visit, based on customizable patterns.
FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.
Make the web faster, more private, and more secure.
Quickly and easily switch between popular user-agent strings.
Does everything for an HTML table: Copy (table/row/column/cell), Sort (multi-column), Search (regex, range operations ...), Filter, Chart, Statistics, Rearrange, Combine/Compare. To use: Right click in a real HTML table for the "tabletools2" option.
'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions. Beta builds on versions page!
Add-on to display GitHub code in tree format
The "NewScrollbars"-extension replaces default scrollbars of Firefox and Thunderbird with colorized ones (partly) known from "Noia themes". [ not compatible with Firefox / Thunderbird 57+ ]
An addon to manage cookies (view, search, create, edit, remove, backup, restore, protect from deletion). Firefox 57+ is supported.
Automatically change the user agent after specified period of time to a randomly selected one, thus hiding your real user agent
Exports all cookies to a Netscape HTTP Cookie File, as used by curl, wget, and youtube-dl, among others.