Directory
Browser tools and extensions covers add-ons, userscripts and utilities that change how you browse the web. Listings include extensions for Chrome, Firefox and similar browsers, along with userscripts, bookmark managers, tab tools and privacy add-ons. Some entries are official store pages, and others are open projects you install from a repository. The permissions each add-on requests, the last update date and the number of maintainers tell you a lot about it. Extensions can read and change page data, so install from a source you trust and confirm what the add-on actually does.
chromium-web-store is a GitHub-hosted browser tool project by NeverDecaf designed for use with ungoogled-chromium. It enables users to add extensions sourced from the official Chrome Web Store to the ungoogled-chromium browser, and also provides semi-automatic functionality for updating installed extensions.
Clean Flash Builds is an open source project with code, documentation, and setup resources for browser tools.
Desktop Browser List is an open source project with code, documentation, and setup resources for browser tools.
A custom deployment of Mozilla's PDF.js generic viewer packaged as a Web Extension, adding a reader mode that changes PDF colors plus features such as Auto-track Document Outline, Smart Zoom text and a Show/Hide toolbar. In Firefox it replaces the built-in PDF.js viewer; in Chromium browsers it coexists with the native viewer and opens PDFs via a context menu or toolbar button.
Extensity is a GitHub-hosted browser extension project created by sergiokas for Google Chrome. Its core function is to allow users to quickly enable or disable installed Chrome extensions. The project is categorized under browser tools and extensions.
A collection of userstyles (CSS hacks) that modify the appearance of Mozilla Firefox. The stylesheets are mostly self-contained and can be mixed, though compatibility with third-party styles is not promised. They are tested only on Windows 10 and to a lesser extent on Linux, and setup involves loading userChrome.css and userContent.css in the Firefox profile.
Just The Browser is an open source project with code, documentation, and setup resources for browser tools.
Prune is an open source project with code, documentation, and setup resources for chrome extensions.
Release Insights is the code behind the whattrainisitnow.com dashboard, which shows the status of Firefox Desktop releases, including upcoming release timing, future milestones and main data points for past releases. It parses sources such as hg log, APIs and crashes to derive insights like uplifts per beta and top crash signatures per nightly. It requires PHP and Composer and needs no database or framework.
Sine is an open source project with code, documentation, and setup resources for browser settings.
Tangram is an open source project with code, documentation, and setup resources for browser tools.
Adaptive Tab Bar Colour is an open source browser tool for improving tabs, bookmarks, extensions, or browsing workflows.
Auto Tab Discard is a browser extension that uses the native tab discarding method (chrome.tabs.discard) to automatically reduce memory usage of inactive tabs. It is described as more efficient and less buggy than alternatives that use DOM replacement. It is offered for Chrome, Edge, Firefox and Opera.
Firefox add-on that sorts bookmarks by multiple criteria. It requires Firefox 142 or later. Settings include an auto-sort option, an inactivity wait, case-insensitive sorting, first and second sort criteria with inverse order, folder sorting options, folders-first ordering, and a tab to exclude folders from sorting.
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.
Bookmarks Organizer is an open source browser tool for improving tabs, bookmarks, extensions, or browsing workflows.
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.
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.
Circadian is an open source browser tool for improving tabs, bookmarks, extensions, or browsing workflows.
CopyTabTitleUrl is an open source browser tool for improving tabs, bookmarks, extensions, or browsing workflows.
Dark Background and Light Text is an open source browser tool for improving tabs, bookmarks, extensions, or browsing workflows.
Default Bookmark Folder is an open source browser tool for improving tabs, bookmarks, extensions, or browsing workflows.
Mozilla web browser focused on open standards, privacy controls, extensions, and cross-device sync.
Mozilla web browser focused on open standards, privacy controls, extensions, and cross-device sync.
