Apps with 'Firefox Extension' feature Page 18 of 35

Detects and automatically closes duplicate tabs.

Maillist is a bookmarking web app and Chrome/Firefox extension that allows you to save articles for later AND also sends you a weekly email with randomly selected unread articles from your list. Free forever!.

Customize menus : Helps removing, moving and renaming menus and menu items New feature: Now you can change or disable any of used keyboard shortcuts Support: Firefox, Thunderbird and SeaMonkey.

View and download Twitch VOD segments.

Fierr is an extension for Mozilla Firefox that replaces the default error page with a useful, visually appealing page with three buttons: Back, Reload, and Search. The background image of the error page is a high quality 500x500 logo matching the product.

AddonCrop is an online store that offers amazing and unique addons or extensions for your web browsers. The extensions available on addoncrop.com works perfectly for Google Chrome, Mozilla Firefox, Opera, Safari, and many other browsers.

Cookies Exterminator automatically erases cookies, localStorage and IndexedDB objects when they are no longer used by open browser tabs. You don't need to use any blacklists and be concerned about how they are up to date - the unwanted data will be removed on the fly.

Proxy Switcher allows you to modify your proxy settings easily from the toolbar panel. Toolbar icon indicates the current type of proxy your browser currently using. The UI for changing proxies is very intuitive. It is very close to the Firefox proxy manager window.

An addon to manage cookies (view, search, create, edit, remove, backup, restore, protect from deletion and much more). Firefox 57+ is supported.

NetworkChuck Cloud Browser, provides users a convenient way to open links inside a NetworkChuck Cloud Browser session. The page is rendered inside the Cloud Browser session, allowing users so safely interact with the webpage.

Gives you a place to put all your add-on buttons without over-crowding the navigation bar.

TMetric is a user-friendly time tracker for freelancers and companies of any teams size. Available in German and English. With TMetric you can: set budgets for your projects; set rates; invoice your clients; see your workday on a timeline; get detailed time and money reports...

Vim Vixen is a Firefox add-on which allows you to navigate with the keyboard on the browser. Firefox started to support WebExtensions API and will stop supporting add-ons using legacy APIs from version 57. For this reason, many legacy add-ons do not work on Firefox 57.

Firefox extension. Highly customizable text highlighter with different colors and save option for later visits.

Shows a popup on tabs and enables you to preview and navigate tab contents through popup. Major features are:

GitHub Hovercard provides neat hovercards for GitHub. It brings you instant access to user/repo/issue/commit information from anywhere on GitHub.

Easily convert web pages to a PDF using this web-based online tool. You can use it as an online-service or as a Firefox add-on. Unfortunately you can only store whole web pages as a PDF-file, not only selected parts of a web page.

A REST client for almost any web service (Firefox and Chrome extension).

Extension that changes the verification badge to those who got it with a blue twitter subscription.

Open multiple URLs at the same time in one click! Do you check every day a few specific sites? And you're getting tired of opening them one-by-one? Start being lazy by using this add-on!

The all-in-one search addon: just select and search. Find on multiple websites at once. Search via overlay, context menu or omnibar. Featuring anonymous profiles. Easy setup: select from 1000+ user generated searches. Cross-browser sync.

Context Search is a Firefox extension that expands the context menu's 'Search for' item into a list of installed search engines, allowing you to choose a specific search engine every time.

Fixes the YouTube™ algorithm to remove mainstream media results from searches. A browser extension to remove Mainstream Media results from YouTube™ searches.

Content Farm Terminator is a cross-platform browser extension that helps the user identify and repel content farms. It has the following features:

FREE browser extension. Blocks harmful sites, protects your privacy and finds deals while you shop.