Firefox add-on with keyword - prevent

Alters some JS APIs to prevent fingerprinting.

Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.

Disable WebRTC and prevent IP leak.

Prevents AUTOMATIC creation of new tabs or repeating tabs when two or more tabs have the same addresses. The process of closing repeated tabs is automatic based on the settings that you can determine within the extension/add-on.

Prevent the loss of sensitive data using ManageEngine Endpoint DLP Plus

Removes and prevents popups, overlays and cookie notifications, other tools do not. Enjoy the original look of the internet.

Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.

Displays the "Leave Page" prompt to avoid accidentally closing the current window. **BUG** To allow Firefox to shut down, click Stay on page and the Close This Tab button before you exit.

Checks password hashes against Have I Been Pwned and displays a notification if the hash has been leaked in a breach.

An easy-to-use tab reloader with custom reloading time settings for individual tabs

Stop sites from taking over your keyboard shortcuts

Prevent bbc.co.uk redirecting to bbc.com

Prevents web pages from declaring a custom ARIA accessibility role for the body. This enables WebAutoType and KeyLayoutAutoSwitch to access the URL.

GitHub overrides the slash key to focus its search box. This extension restores the default Firefox behavior to pop up the Find bar.

Prevents a new tab from opening after downloading a PDF and optionally shows a `Save As...` window to choose where to save the PDF.

Prevents Youtube videos from automatically playing. You must either click the play button or press space to start the video.

A customizable, password-protected website blocker and redirector.

Prevent permanent damage to your eyes while browsing the web with this tool.

Control your browser faster and easier with gestures using mouse movement.

Disable WebRTC and prevent IP leak.

Removes tracking elements from URLs

New Tab Override allows you to set the page that shows whenever you open a new tab.

The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits.

Blocks CTRL+S / CMD+S keyborad shortcut on websites, where you probably don't need it.

Chrome extension that visually merges the same event on multiple Google Calendars into one event. Source: https://github.com/imightbeamy/gcal-multical-event-merge