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Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
usi (User|Unified Script Injector) No Restart
use UserScripts on your Firefox for Android with usi!
Optimizely Toggle No Restart
This extension disables Optimizely for the tab you are browsing, via a switch.
Jenkins Monitor No Restart
Jenkins build monitor for keeping an eye on a job or view of jobs in the toolbar
Certificate Manager No Restart
An add-on to simplify certificate management.
The Tosca Testsuite 9.2 - Automation Extension helps you to easily automate your web testing needs with the help of Tricentis Tosca Testsuite.
SeoQuake SEO extension No Restart
Seoquake is a Firefox SEO extension aimed primarily at helping web masters who deal with search engine optimization (SEO), social media optimization (SMO) and internet promotion. Seoquake allows to investigate many important SEO parameters.
Script Developer is a Firefox extension that lets you record, edit, and replay Selenium-style scripts. It is your place to record, edit, and replay tests with Firefox. The generated scripts can later be used with any WebDriver via the XLT Framework.
Open Two-Factor Authenticator No Restart
A sync-able open-source two-factor authenticator
Tab Data (+Memory usage) No Restart
Provides user with tab related stats and memory usage
Page for Hatena Bookmark No Restart
Show the page's bookmark counts for Hatena Bookmark. And jump to the detail page. This is *not* official one.
Octotree No Restart
Add-on to display GitHub code in tree format
Codecademy Redesigned No Restart
Fixed bugs, new features, and restyled Q&A forums - Codecademy Redesigned.
NoScript Security Suite Featured
The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
Wikimedia Debug Header No Restart
Inject a 'X-Wikimedia-Debug' header into HTTP requests to Wikimedia Foundation projects.
Firebug extension for debug web-applications with Clockwork
CORS No Restart
IPFS Gateway Redirect No Restart
This addon provides transparent access to IPFS resources via local HTTP2IPFS gateway.
WinTask x64 No Restart
WinTask component browser automation