In a similar style to the old pre-WebExtensions CookieMonster plugin, CookieMaster allows you to control which sites are allowed to set cookies, focusing mainly on first party cookies.
Cost / License
- Free
- Open Source
Platforms
- Mozilla Firefox



LinkLocker is a lightweight bookmarking service with an emphasis on privacy. Save your links on our secure servers, and they will be visible only to you.

Be able to watch any sub-only vod on Twitch, integrated in the website and support every twitch features.
Cost / License
- Free
- Open Source (Apache-2.0)
Platforms
- Google Chrome
- Twitch
- Mozilla Firefox

Image Search Options provides a set of highly customizable reverse image search context menu options.
Cost / License
- Free
- Proprietary
Application type
Platforms
- Online
- Google Chrome
- Firefox


+1
It is a universal night mode for the entire Internet. It uses a special algorithm to automatically change the colors of the websites you visit into dark mode so that you can browse without straining your eyes, especially at night.
Cost / License
- Free
- Open Source
Application type
Alerts
- Discontinued
Platforms
- Windows
- Google Chrome
- Mozilla Firefox



Pincone is a simple and well-designed bookmarking tool for websites, newsletters, feeds, articles, and much more 💛.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Online
- Google Chrome
- Brave
- Mozilla Firefox


+2
Cost / License
- Free
- Open Source (GPL-3.0)
Application type
Platforms
- Online
- Chrome OS
- Google Chrome
- Mozilla Firefox


+5
On an internet dominated by ads and corporate-run websites, Indie Wiki Buddy is a browser extension that helps you easily find and support independent wikis.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Google Chrome
- Firefox


+1
Cost / License
- Free
- Open Source (GPL-3.0)
Application types
Platforms
- Online
- Google Chrome
- Mozilla Firefox
- Thunderbird
- Safari
- Microsoft Edge


+6
Dynamically load stylesheets in Firefox from plaintext files in your profile.
superUserContent is a simple Firefox plugin that creates a new directory in your profile's chrome directory called userContent.css.d. You can use this directory as a runtime path for css styleshee.
Cost / License
- Free
- Open Source
Application type
Platforms
- Mac
- Windows
- Linux
- Mozilla Firefox

Saves web content directly into Notion. Bookmark articles, extract text, and save media into your Notion database with customization filters.
Cost / License
- Freemium
- Proprietary
Platforms
- Google Chrome
- Mozilla Firefox


+1
FilterBypass is a free web proxy that can unblock Youtube , Facebook , Twitter, VK as well as many other website.We welcome users regardless of demographics with a focus of making the web accessible to all with our online proxy.
Cost / License
- Free
- Proprietary
Alerts
- Discontinued
Platforms
- Online
- Google Chrome
- Firefox

GNU LibreJS is a free add-on for GNU IceCat and other Mozilla-based browsers. It blocks nonfree nontrivial JavaScript while allowing JavaScript that is free and/or trivial.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux
- BSD
- GNU IceCat
- Firefox

Glosbe is a platform providing free dictionaries with in-context translations (translated sentences - the so-called translation memory). You will find here:

A cross browser extension to help people download videos from websites, including, HLS, DASH, Live Stream.
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Microsoft Edge
- Google Chrome
- Mozilla Firefox


+4
On average, it takes 12 seconds to type out a name, email, and address. With SimpleFill, it takes a maximum of 3 seconds. You might be wondering why use SimpleFill when browsers have autofill features by default.
Cost / License
- Freemium
- Proprietary
Platforms
- Microsoft Edge
- Google Chrome
- Safari
- Opera
- Mozilla Firefox
- Brave
- Vivaldi
- Chromium


+1
This is an experimental Firefox 57 download manager with multithreading support.


+1
Multi Links Plus lets you open, copy or bookmark multiple links at the same time rather than having to do them all individually.
Cost / License
- Free
- Open Source
Alerts
- Discontinued
Platforms
- Mac
- Windows
- Linux
- BSD
- Waterfox
- Pale Moon
- Firefox



This add-on changes Firefox's theme automatically while you browse the web, matching the appearance of the current website you are viewing — just like how macOS Safari tints its tab bar.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Mozilla Firefox


+1
Access messages everywhere Whether you are working at your computer, reading on your tablet, or watching the game on your TV. Pulse is with you everywhere, so you never miss a message.
Cost / License
- Freemium
- Proprietary
Platforms
- Online
- Android
- Google Chrome
- Mozilla Firefox


+9
Ninja Download Manager is an Internet download manager and accelerator that dramatically increases download speed and allows you to resume and restart stopped / broken downloads.
Cost / License
- Freemium
- Proprietary
Application type
Alerts
- Discontinued
Platforms
- Mac
- Windows
- Google Chrome
- Firefox



Quickly view basic info about every webpage, including server location, IP addresses, certificate expiration date and issuer, HTTP status code and load time.
Cost / License
- Free
- Open Source (MPL-2.0)
Platforms
- Firefox



This extension will block access to websites of your choosing. A master password controls all customization options, as well as access to any blocked site. It’s also possible to redirect navigation from one specific website to another.
Cost / License
- Free
- Open Source (MPL-2.0)
Application type
Platforms
- Google Chrome
- Firefox
- Microsoft Edge
- Opera



























































