Greasemonkey is a Firefox extension that allows you to customize the way webpages look and function.
Cost / License
- Free
- Open Source
Application type
Platforms
- Mozilla Firefox
United States



Greasemonkey is a Firefox extension that allows you to customize the way webpages look and function.



Block ads, cookies, popups & other trackers. Ghostery sets you up for a private, transparent, and fast 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.




Web-browser, advanced e-mail, newsgroup and feed client, IRC chat, and HTML editing in one application. Itis built on the open source Mozilla Gecko engine, the same code which underlies Thunderbird and is the base for the Firefox browser.




Extension for Chrome and Firefox downloading both audio and video from many websites. Detects downloadable content and offers a user-friendly menu.




Violentmonkey provides userscript support for Chrome, Opera, Maxthon and Firefox supporting most scripts for Greasemonkey and Tampermonkey.



Cross-platform tool for collecting, searching, and organizing images, videos, audio, and fonts with advanced tags, smart folders, and color filters for creative asset management.




WebKit-based privacy browser supporting Firefox and Chrome extensions, zero telemetry, built-in ad-blocker, anti-tracking, fast performance, and native integration.




Save web links and email newsletters, add notes and highlights, tag and favorite articles, and read distraction-free in a Markdown viewer online or offline.




Save web pages for offline reading, organize long articles and blog posts, enjoy distraction-free mode, and sync content across devices with text-to-speech support.








Manages bookmarks and RSS feeds with customizable widgets and themes. Offers browser extensions for cross-device usability and personalized pages.




Snowflake is a system to defeat internet censorship. People who are censored can use Snowflake to access the internet. Their connection goes through Snowflake proxies, which are run by volunteers.




HTTPS Everywhere is a browser extension produced as a collaboration between The Tor Project and the Electronic Frontier Foundation. It encrypts your communications with a number of major websites.




PDF Viewer (aka pdf.js) is a new revolutionary extension using web standard technologies that allows you to display within Mozilla Firefox almost all PDF files found on the web without a plugin.


Download Firefox extensions and themes. They’re like apps for your browser. They can block annoying ads, protect passwords, change browser appearance, and more.



A reading app that keeps you in the flow of your online reading & research. Save, annotate, share & collaborate without leaving your tab.




Fast & free RSS feed reader as a browser extension for Chrome, Vivaldi, Edge, Brave and Firefox for reading blogs, news or any RSS, Atom or RDF based feed.




Automatically handles GDPR consent dialogs in browsers, lets you set privacy preferences once, supports major browsers, and defaults to stricter privacy options.




Browser add-on that blocks user-specified sites from search results using match patterns or regular expressions, with support for cloud sync and partial meta-search support.




Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.




Send links, files, photos, lists, and notes instantly between devices, mirror phone notifications to desktop, and access clipboard syncing with advanced plans.



This extension will automatically remove tracking elements from URLs to help protect your privacy when browse through the Internet.




Enables private, separate browsing sessions with isolated cookies and storage, allowing multiple account sign-ins, unique container settings, and privacy benefits.



Save and restore the state of windows and tabs. It also supports automatic saving and cloud sync.


