Crash yourself with ease
Important note: This extension will not work in Firefox 57 and above. Providing this functionality in Firefox is no longer possible, the extension is discontinued.
Rewrite http response body using search & replace patterns
Manages the Click-to-Play domain whitelist.
Adds a new page that shows add-on memory usage
Enable afp protocol (afp://)
Search in all your search engines at the same time
The Book of Mozilla, 15:1 in Japanese
SanRockstar Requires Restart
Darkens the background of the page
yangben dictionnary Requires Restart
spell check for Yangben Cameroun