github.com
Browser Extension is an open source project for saving, replaying, or working with archived web pages.
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addons.mozilla.org
SwiftTheme is a Firefox browser extension that allows users to apply custom color themes to their browser interface. It offers more than 3 million color options, an intuitive color picker, automatic adaptation to selected colors, multiple theme variants, compatibility with older Firefox designs, and no conflicts with other browser themes. User settings are stored locally on the device and no user data is collected by the extension. A related SwiftDial homepage extension is also available from the developer.
chromewebstore.google.com
Browser extension for Chrome Extension, adding useful tools or workflow improvements inside the browser.
chromewebstore.google.com
Browser extension for Extension Manager, adding useful tools or workflow improvements inside the browser.
A blog post listing OSINT utilities for the Google Chrome browser. It states that browser extensions can aid investigators, recommends a clean browser installation for sensitive investigations, and includes items such as Exif Viewer Pro, Hunter Email Finder, and Instant Data Scraper.
github.com
Chrome-Extension is a repository collecting different types of Chrome extensions, described as beginner-friendly and open source. Its folders include extensions such as a 2048 game, ad blocker, age calculator, alarm clock, BMI calculator, currency converter, dark mode extension, dictionary, password generator and many others.
stefanbuck.com
A curated list of browser extensions for GitHub, organized by categories such as code, pull requests, notifications and themes, and browsable by browser. It includes entries such as Octotree for reading source without downloading repositories and Refined GitHub for simplifying the interface.
addons.mozilla.org
CRXInstaller is a Firefox browser extension developed by FoxRefire. It enables users to install Chrome browser extensions on Zen, Firefox Nightly, Firefox Developer Edition, Librewolf, and Firefox for Android. Use with standard Firefox requires additional configuration steps. The developer warns that installing untrusted extensions poses serious security risks and disclaims liability for any resulting damage, with the extension's source code available on GitHub.
addons.mozilla.org
User-Agent String Switcher is a Firefox browser extension that spoofs the browser's user-agent string to prevent websites from collecting information about the user's browser type, operating system, and browsing configuration, allowing users to receive preferred site content. It allows custom user-agent strings to be set via the toolbar popup, uses a two-factor technique to replicate the default user-agent string for reliability, and consumes no resources when not actively spoofing. A common use case is setting a mobile user-agent string to load faster-loading mobile versions of websites.
addons.mozilla.org
ContextSearch web-ext is a Firefox browser extension compatible with Firefox 57 and later. It lets users select text to search using the context menu or a tiled popup with any installed search engine. Users can add new search engines via right-click, edit favicons and query strings, and the extension supports both POST and GET requests, with a simple, highly configurable user interface.
addons.mozilla.org
Copy Selected Links is a browser extension developed by Marnes. It enables users to right-click selected text containing links to copy the URLs of all included links, copy their associated text, or open the links in new tabs. The extension is available for Firefox and Chrome, with its source code hosted on GitLab. Updated versions of related tools from the developer are available on their Greasyfork account.
addons.mozilla.org
FoxyLink is a Firefox extension that adds link-related actions to the browser context menu. Its features include opening, copying, or saving selected links, removing duplicate URLs, and grabbing URLs from mixed text and hyperlinks. The developer states the extension contains no tracking, advertising, or privacy infringement.
addons.mozilla.org
Multithreaded Download Manager is a Firefox browser extension. It downloads files using multiple simultaneous connections to the server, which may improve download speed depending on network conditions. Users can adjust Firefox configuration settings to use more than 6 download threads. The extension does not collect or upload user data, and requires sufficient disk space as files are first stored in Firefox's internal storage.
addons.mozilla.org
Temporary Containers is a Firefox browser extension that opens tabs, websites, and links in automatically managed disposable containers. These containers isolate website-stored data including cookies and local storage from each other to enhance user privacy and security while browsing. It supports fully automatic operation based on navigation targets, configuration for specific websites, activation via configured mouse clicks or the toolbar icon, and automatic deletion of history, cookies, and scripts after use. The extension is free and open source.
github.com
Firefox Web Extension add-on that displays and filters bookmarks on a search string and shows parent folders. It is a Web Extension version of the older "Bookmark search plus" XUL extension by Alice0775.
grammarly.com
Extension (Grammarly's browser extension) is a tool that provides AI-powered writing assistance across web platforms, with features including grammar checking, proofreading, and generative AI tools for drafting and rewriting text.
scratchaddons.com
Scratch Addons is an all-in-one browser extension for the Scratch website and project editor that combines new and existing features and themes, called addons, into one configurable extension. It includes over 100 addons that can be enabled or disabled individually, and its interface is available in multiple languages. The project is free and open source and built by a community of Scratchers.
addons.mozilla.org
Browser extension for Firefox Addons, adding useful tools or workflow improvements inside the browser.
addons.mozilla.org
Browser extension for FireShot, adding useful tools or workflow improvements inside the browser.
webextension.org
A browser extension that modifies JavaScript methods to restore the original right-click context menu when a website blocks it. It adds a toolbar button, and clicking the icon injects a small script into the current page to remove the blockage. The extension injects no code by default; scripts run only on user action.
archiveweb.page
ArchiveWeb.page is a browser extension and standalone application that captures web archives interactively while browsing. Archived pages can be viewed using ReplayWeb.page without an extension. Automated whole-website crawling is handled by separate tools such as Browsertrix.
autorefresh.io
Auto Refresh Plus is a browser extension for automatically refreshing web pages. It offers predefined, custom and random refresh intervals, a countdown timer, a visual timer and hard refresh to bypass cache, and it includes a page monitor. The extension is available for Chrome, Edge and Opera.
github.com
Clipboard2File for Chrome is a fork of Clipboard2File for Chromium-based browsers. It is a small extension that allows an image on the clipboard to be used as a file. Installation requires the Chromium extension plus a Companion, which uses Chrome's Native Messaging API to gather clipboard images outside the browser and runs only when called by Chrome.
robwu.nl
CRX Viewer is a tool that generates or modifies URLs for Chrome Web Store items and locates XPI files for Firefox add-ons on AMO. Users can input a browser extension, add-on, zip file, or store page URL, or select a local file to retrieve download links and metadata including extension ID, supported operating systems, architectures, and Chrome version compatibility. It also provides links to official store listings. The tool's source code is hosted on GitHub by Rob Wu.