Browse free open source JavaScript Browsers and projects below. Use the toggles on the left to filter open source JavaScript Browsers by OS, license, language, programming language, and project status.

  • Train ML Models With SQL You Already Know Icon
    Train ML Models With SQL You Already Know

    BigQuery automates data prep, analysis, and predictions with built-in AI assistance.

    Build and deploy ML models using familiar SQL. Automate data prep with built-in Gemini. Query 1 TB and store 10 GB free monthly.
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    Try Google Cloud Risk-Free With $300 in Credit

    No hidden charges. No surprise bills. Cancel anytime.

    Use your credit across every product. Compute, storage, AI, analytics. When it runs out, 20+ products stay free. You only pay when you choose to.
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  • 1
    BlackBelt Privacy Tor/i2p+WASTE+VidVoIP

    BlackBelt Privacy Tor/i2p+WASTE+VidVoIP

    Browse on Tor/i2p, Anon p2p Chat / FileTx, Conf / Video VoIP

    Open Source - GPLv3 inc images. *** PLEASE NOTE: There are now 2 seperate versions here. *** One is Pre Firefox 57. The other is Post Firefox 57. *** For those providing mirrors, please enable your users to realize this. Vidalia Based, Tor as a Service Solution. MicroSip: enables FREE PC to PC video calling with no account sign-up and no middleman server. WASTE: enables FREE Conference VoIP, chat, file transfer and support. *** AI Powered *** Tor/i2p: enables safer browsing. Tor/i2p Profile: Browse over Tor/i2p on Firefox (Vanilla, ESR), Waterfox (Classic, New), Palemoon , LibreWolf and legacy CyberFox. As with all versions of Tor - do not rely on this for strong anonymity. A usability enhanced Privacy Pack. Use alongside Tor Browser Bundle. An installer, for : Vista 32/64, Win7 32/64, Win8 32/64, Win10 32/64, Win11, Linux (Wine)
    Downloads: 63 This Week
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  • 2
    Ghostery

    Ghostery

    Ghostery Browser Extension for Firefox, Chrome, Opera and Edge

    Ghostery helps you browse smarter by giving you control over ads and tracking technologies to speed up page loads, eliminate clutter, and protect your data. This is the unified code repository for the Ghostery browser extensions in Chrome, Firefox, Opera and Edge. Browse the web safer, faster & with less annoying ads. Equipped with award-winning AI anti-tracking technology to browse the websafe and quickly. Ghostery helps you stay informed about what companies are tracking you by listing the trackers on each website you visit. Granular control within the detailed view allows you to block and unblock specific trackers. With one click, always allow or forbid Ghostery to block trackers and protect your personal data on a specific site. Smart-Browsing automatically optimizes page performance as your browse.
    Downloads: 10 This Week
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  • 3
    user.js

    user.js

    Firefox privacy, security and anti-tracking: a comprehensive user.js

    A user.js is a configuration file that can control Firefox settings - for a more technical breakdown and explanation, you can read more in the wiki. The arkenfox user.js is a template that aims to provide as much privacy and enhanced security as possible and to reduce tracking and fingerprinting as much as possible - while minimizing any loss of functionality and breakage (but it will happen). Everyone, experts included, should at least read the wiki, as it contains important information regarding a few user.js settings. Note that we do not recommend connecting over Tor on Firefox. Use the Tor Browser if your threat model calls for it, or for accessing hidden services. Also be aware that the arkenfox user.js is made specifically for desktop Firefox. Using it as-is in other Gecko-based browsers can be counterproductive, especially in the Tor Browser.
    Downloads: 10 This Week
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  • 4
    Puppeteer

    Puppeteer

    Headless Chrome Node.js API

    Puppeteer is a headless Node library that provides a high level API for controlling Chromium or Chrome over the DevTools protocol. It requires zero setup and comes bundled with the Chromium version most suited to it. Puppeteer is headless by default, making it fast to run. However, it can also be set to run full or non-headless Chrome or Chromium, simply set the headless option when launching a browser. Many of the things you can do manually in the browser, you can also do with Puppeteer such as generate page screenshots and PDFs, crawl a Single-Page Application, test Chrome extensions and more.
    Downloads: 9 This Week
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  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build generative AI apps with Vertex AI. Switch between models without switching platforms.
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  • 5
    Replace Google CDN

    Replace Google CDN

    A Chrome plugin: Replace Google CDN with domestic

    For well-known reasons, just substituting a domain name can continue to use the front-end public library provided by Google. Likewise, referencing these resources via the scripttag will instantly speed up your website access! Many websites, especially foreign websites, use Google's CDN in order to speed up the website. But in China, due to some reasons, the world's fastest CDN has become the world's slowest. So, I wrote this plugin/extension to replace Google's CDN with a domestic one. This plugin/extension can replace the cdn resources with domestic ones.
    Downloads: 9 This Week
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  • 6
    Pixiv Toolkit

    Pixiv Toolkit

    A web extension for Pixiv

    Pixiv Tookit is a web extension for Pixiv users. You can download animation, manga, illusions, and novels from Pixiv using this. If you are using Chrome, you can download it from Chrome web store. If you are using Firefox, you can download it from Firefox Add-ons. If you are not using Chrome or Firefox, you can try clone the project to your local machine, and build the extension by yourself. There is a layer with a arrow will appear at the center bottom of the page if the page has available content. Click the arrow to active the action panel, then enjoy. You can use this extension to convert the ugoira on Pixiv to GIF or WebM file, or pack the images of manga to download or save the novel as epub. You can also download images from Pixiv Comic and Pixiv Fanbox (Notice: You need to have access to the post or comic you want to download in order to download the resource).
    Downloads: 8 This Week
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  • 7
    Translate Web Pages

    Translate Web Pages

    Translate your page in real time using Google or Yandex

    Translate your page in real time using Google or Yandex. It is not necessary to open new tabs. Now works with the NoScript Extension. Your current page is translated without having to open new tabs. It is possible to change the translation language. You can select to automatically translate. To change the translation engine just touch the Google Translate icon. To translate any website it is necessary to access and modify the text of the web pages. And the extension can only do that, with that permission. The pages are translated using the Google or Yandex translation engine (you choose). We do not collect any information. However, to translate, the contents of the web pages will be sent to Google or Yandex servers. You can also install via crx file, download the file using a download manager/or firefox. Activate developer mode and drag the file into the chromium extension manager. It doesn't work on Chrome/Edge.
    Downloads: 8 This Week
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  • 8
    Turbo Download Manager

    Turbo Download Manager

    A portable modern multi-threading download manager for all platforms

    A modern multi thread download manager for Windows, Linux, Mac OS, Firefox, Chrome, Opera and Android devices. For bug reports visit: https://github.com/inbasic/turbo-download-manager/issues For FAQs visit: http://add0n.com/turbo-download-manager.html Turbo Download Manager is an stand-alone application without any dependencies. It should run out of the box. Just set the download location while adding the first job request. If you have a browser and would like to integrate this download, use these browser extensions: Firefox: https://addons.mozilla.org/firefox/addon/turbo-download-manager/ Opera: https://addons.opera.com/extensions/details/turbo-download-manager/ Chrome: https://chrome.google.com/webstore/detail/turbo-download-manager/kemfccojgjoilhfmcblgimbggikekjip
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    Downloads: 74 This Week
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  • 9
    Beaker Browser

    Beaker Browser

    An experimental peer-to-peer Web browser

    Beaker is an experimental, open source peer-to-peer Web browser that allows you to create websites from inside the browser. It has a built in editor that lets you edit your source code side-by-side with your page. With Beaker you can create a new P2P site with just a click, and allow other Beaker users to visit your site directly from your computer! Beaker works through a new peer-to-peer network called Hypercore Protocol, which allows other Beaker users to access these websites with no servers necessary. This is great for settings like offices and classrooms where you'd need an easy way to share a website without having to set up servers or even touch the command line.
    Downloads: 7 This Week
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  • Stop Storing Third-Party Tokens in Your Database Icon
    Stop Storing Third-Party Tokens in Your Database

    Auth0 Token Vault handles secure token storage, exchange, and refresh for external providers so you don't have to build it yourself.

    Rolling your own OAuth token storage can be a security liability. Token Vault securely stores access and refresh tokens from federated providers and handles exchange and renewal automatically. Connected accounts, refresh exchange, and privileged worker flows included.
    Try Auth0 for Free
  • 10
    Lighthouse

    Lighthouse

    Automated auditing, performance metrics, & best practices for the web

    Lighthouse is an open-source, automated tool that analyzes and audits web apps and web pages in order to improve their quality. Lighthouse collects modern performance metrics and insights on developer best practices; auditing for performance, accessibility, SEO and more. After auditing it produces a report either in JSON or HTML. Included in the report is a reference doc that explains the importance of the audit and how to fix the problem areas, which you can use to improve the web app or web page. Lighthouse can be integrated directly into the Chrome DevTools with its own panel. To run it, you would simply have to select the Lighthouse panel and click on "Generate report". It can also be run from the command line, or as a Node module.
    Downloads: 7 This Week
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  • 11
    CHM Reader is a Firefox extension that make Compiled HTML Files can be viewed with Firefox directly.
    Downloads: 48 This Week
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  • 12
    Orphne is a highly specialized web browser, optimized for viewing "adult" content. Features include tagging, rating, and bookmarking sites, an integrated search, and slide shows. Please note that orphne is intended for adults only.
    Downloads: 64 This Week
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  • 13
    Bowser

    Bowser

    Bowser is a browser detector

    A small, fast and rich-API browser/platform/engine detector for both browser and node. The library is made to help to detect what browser your user has and gives you a convenient API to filter the users somehow depending on their browsers. Version 2.0 has drastically changed the API. All available methods are on the docs page. Often we need to pick users' browser properties such as the name, the version, the rendering engine and so on. You could want to filter some particular browsers to provide any special support for them or make any workarounds. Settings for any particular OS or platform has more priority and redefines settings of standalone browsers. Thus, you can define OS or platform-specific rules and they will have more priority in the end. More of API and possibilities you will find in the docs folder.
    Downloads: 6 This Week
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  • 14
    PT Plugin Plus

    PT Plugin Plus

    Google Chrome extension

    PT Assistant Plus, a browser plug-in (Web Extensions) for Google Chrome and Firefox, is mainly used to assist in downloading seeds from PT stations. PT Assistant Plus is a browser plug-in (Web Extensions), a tool that can improve the efficiency of PT site usage. Applicable to various PT stations, it can make various operations such as downloading seeds easier and faster. With the download server (such as Transmission, µTorrent, etc.), the specified torrent can be downloaded with one click. This version refactors the original PT Assistant , removes the cumbersome configuration, and obtains a better user experience. Display the current available space of the default download server, currently supported. Multi-site aggregation to search for seeds of the same keyword. Display exclusive functions according to the current site.
    Downloads: 6 This Week
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  • 15
    bootstrap-datepicker

    bootstrap-datepicker

    A datepicker for twitter bootstrap

    Bootstrap-datepicker provides a flexible datepicker widget in the Bootstrap style. Versions are incremented according to semver. As with bootstrap’s own plugins, datepicker provides a data-api that can be used to instantiate datepickers without the need for custom javascript. You can disable datepicker’s data-api in the same way as you would disable other bootstrap plugins. Most options can be provided via data-attributes. An option can be converted to a data-attribute by taking its name, replacing each uppercase letter with its lowercase equivalent preceded by a dash, and prepending “data-date-” to the result. Methods are called on a datepicker by calling the datepicker function with a string first argument, followed by any arguments the method takes.
    Downloads: 6 This Week
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  • 16
    OWASP Mantra - Security Framework

    OWASP Mantra - Security Framework

    Free and Open Source Browser based Security Framework

    OWASP Mantra - Free and Open Source Browser based Security Framework, is a collection of free and open source tools integrated into a web browser, which can become handy for penetration testers, web application developers, security professionals etc.
    Downloads: 27 This Week
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  • 17
    ClearURLs

    ClearURLs

    ClearURLs is an add-on based on the new WebExtensions technology

    ClearURLs is an add-on based on the new WebExtensions technology and is optimized for Firefox and Chrome-based browsers. This extension will automatically remove tracking elements from URLs to help protect your privacy when browsing through the internet. For this purpose, we use a large catalog of rules, which is actively maintained by us and the community. Many websites use tracking elements in the URL to mark your online activity. All that tracking code is not necessary for a website to be displayed or work correctly and can therefore be removed, that is exactly what ClearURLs does. Prevents Google from rewriting the search results (prevents the insertion of tracking code). Prevents Yandex from rewriting the search results (prevents the insertion of tracking code). Prevents tracking injection over history API.
    Downloads: 5 This Week
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  • 18
    MagicMirror²

    MagicMirror²

    Modular smart mirror platform with a list of installable modules

    MagicMirror² is Open Source, free and maintained by a big group of enthusiasts. Got a nice idea? Send us a pull request and become a part of the big list of contributors. The core of MagicMirror² contains a strong API which allows 3rd party developers to build additional modules. Modules you can use. Modules you can develop. Read our extensive documentation to find out everything you want to know about the MagicMirror² project. The full API description allows you to build your own modules. On the forum you will find a big list of MagicMirror² enthusiasts. Share your ideas, ask your questions and get support. The perfect place for you to start. MagicMirror² has an extensively documentated API. It allows you to built your own module backed by a powerful backend. Check out the API documentation for more information and start developing today.
    Downloads: 5 This Week
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  • 19
    Privacy Badger

    Privacy Badger

    Privacy Badger automatically learns to block invisible trackers

    Privacy Badger is a browser extension that stops advertisers and other third-party trackers from secretly tracking where you go and what pages you look at on the web. If an advertiser seems to be tracking you across multiple websites without your permission, Privacy Badger automatically blocks that advertiser from loading any more content in your browser. To the advertiser, it’s like you suddenly disappeared. Privacy Badger was born out of our desire to be able to recommend a single extension that would automatically analyze and block any tracker or ad that violated the principle of user consent; which could function well without any settings, knowledge, or configuration by the user; which is produced by an organization that is unambiguously working for its users rather than for advertisers; and which uses algorithmic methods to decide what is and isn’t tracking.
    Downloads: 5 This Week
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  • 20
    SimpRead

    SimpRead

    An extension that allows you to instantly enter immersive reading

    Unique function, by extracting titles, descriptions, text, media pictures/videos and other resources to generate pages that conform to Chinese reading habits, with zero-interference and immersive features, suitable for in-depth reading. Do not change the structure of the current page, just highlight the part that needs to be read, suitable for temporary reading or websites that are not adapted to the reading mode. Have pictures you don’t want to show? no problem! Any element on the page can be re-edited. The brand-new lexical analysis engine can not only recognize Wordpress, Hexo, Ghost, and Discuz, as long as it is a well-structured page, it can automatically generate a reading mode. Not only that, but also has a variety of recognition modes.
    Downloads: 5 This Week
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  • 21
    Wavebox

    Wavebox

    Wavebox, the revolutionary and feature-rich Chromium browser

    This is an issues & release-only repo for Wavebox, the revolutionary and feature-rich Chromium browser that's built for productive working across Google Workspaces, Microsoft Teams, ClickUp, Monday, Atlassian, Asana, AirTable, Slack, and every other web app you use to get work done. Wavebox gives you customizable toolbars, sleeping tabs, cookie containers and multiple profiles.
    Downloads: 5 This Week
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  • 22
    bootstrap-select

    bootstrap-select

    The jQuery plugin that brings select elements into the 21st century

    The jQuery plugin that brings select elements into the 21st century with intuitive multiselection, searching, and much more. Now with Bootstrap 4 support. Bootstrap-select requires jQuery v1.9.1+, Bootstrap’s dropdown.js component, and Bootstrap's CSS. If you're not already using Bootstrap in your project, a precompiled version of the Bootstrap v3.4.1 minimum requirements can be downloaded. If using bootstrap-select with Bootstrap v4+, you'll also need Popper.js. For all of Bootstrap v4's requirements, see Getting started. A precompiled version of the requirements will be made available in an upcoming release of bootstrap-select. Bootstrap 4 only works with bootstrap-select v1.13.0+. By default, bootstrap-select automatically detects the version of Bootstrap being used. However, there are some instances where the version detection won't work.
    Downloads: 5 This Week
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  • 23
    Autoprefixer

    Autoprefixer

    Parse CSS and add vendor prefixes to CSS rules by Can I Use

    PostCSS plugin to parse CSS and add vendor prefixes to CSS rules using values from Can I Use. It is recommended by Google and used in Twitter and Alibaba. Write your CSS rules without vendor prefixes (in fact, forget about them entirely). Autoprefixer will use the data based on current browser popularity and property support to apply prefixes for you. You can try the interactive demo of Autoprefixer. Autoprefixer uses Browserslist, so you can specify the browsers you want to target in your project with queries. It can help you get prefixes for: animations, transition, transform, grid, flex, flexbox and others. You can configure which browsers to generate prefixes for in the distribution. The IE grid layout polyfill is enabled, which is not by default in autoprefixer. Autoprefixer can be used to translate modern CSS Grid syntax into IE 10 and IE 11 syntax, but this polyfill will not work in 100% of cases. This is why it is disabled by default.
    Downloads: 4 This Week
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  • 24
    BeEF

    BeEF

    The browser exploitation framework project

    BeEF is short for The Browser Exploitation Framework. It is a penetration testing tool that focuses on the web browser. Amid growing concerns about web-borne attacks against clients, including mobile clients, BeEF allows the professional penetration tester to assess the actual security posture of a target environment by using client-side attack vectors. Unlike other security frameworks, BeEF looks past the hardened network perimeter and client system, and examines exploitability within the context of the one open door: the web browser. BeEF will hook one or more web browsers and use them as beachheads for launching directed command modules and further attacks against the system from within the browser context.
    Downloads: 4 This Week
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  • 25
    Listen 1

    Listen 1

    One for all free music in china (chrome extension)

    Listen 1 can search and play songs from Netease Cloud Music, Xiami, QQ Music, Kugou Music, Kuwo Music, Bilibili, Migu Music website, making your music library more comprehensive. It also supports the playlist function, you can easily play, collect and create your own playlist. Download the Chrome plugin version zip package and unzip it. Open the Chrome extension page and check "Developer Mode" in the upper right corner. Select "Load unpacked extension..." and select the folder you just unpacked. Download the Windows zip file and choose the 32-bit or 64-bit version according to the system. The original web player, using Python to develop a web server. Can run directly on the server, or use the packaged Windows and Mac versions to run the web server locally. Windows, Mac, Linux desktop. Using Electron framework, based on Listen 1 Chrome plug-in version JS library development.
    Downloads: 4 This Week
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