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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  • Build Agents and Models on One Platform Icon
    Build Agents and Models on One Platform

    Everything you need to build production-ready agents and models. Access 200+ Google and third-party AI models and tools.

    Gemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
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  • 1
    Nacre

    Nacre

    Privacy-focused web browser for Windows, with Tor built in

    Nacre is a free and open-source web browser for Windows, built on Chromium (Electron). Tor is on by default, with bridge support. Each workspace has its own cookies and storage. Ads and trackers are blocked locally, and phishing checks don't send the sites you visit anywhere. No account, no sync, no telemetry. Nacre 1.0 is a beta: the installer is not signed yet and some protections are partial. If your safety depends on anonymity, use Tor Browser.
    Downloads: 5 This Week
    Last Update:
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  • 2
    Reverse Image Search Anywhere

    Reverse Image Search Anywhere

    4-engine reverse image search that works on Instagram & Pinterest

    Reverse Image Search Anywhere is a free, open-source (MIT) browser extension for Chrome, Firefox, Edge and Opera. Most reverse-image tools work by handing a search engine the image's URL. That breaks the moment a site hides it. Instagram and Pinterest do, and so does anything drawn to a canvas or served as a blob: or data: URL. They also make you check one engine at a time, which is the slow half of the job. This extension fixes both halves. Right-click any image and search Google Lens, Yandex, Bing Visual and TinEye, one engine or all of them at once. It also handles clipboard paste, region capture, and a face-search-first flow for finding people. Privacy: plain searches never touch our servers. Uploads happen only when you ask for them, get a link that expires after 15 minutes, and the file is deleted automatically about a day after it arrives. The source is published here so you can check that rather than take it on trust.
    Downloads: 5 This Week
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  • 3
    XForms to XHTML+Javascript (AJAX) conversion based on a unique XSL transformation. Suitable server-side (PHP) or client-side (Internet Explorer, Mozilla FireFox, Opera, Safari) browser treatement where an XSLT 1.0 engine is available
    4.8 out of 5 stars 8 Reviews
    Downloads: 1 This Week
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  • 4
    An automated client developed for downloading sequenced files.
    Downloads: 4 This Week
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  • 5
    Greasemonkey
    Remote repository and documentation for user.js engine
    Downloads: 4 This Week
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  • 6
    Another YouTube Downloader
    Cross browser userscript to download videos from YouTube in various formats and sizes available. Find size of videos before downloading (http://pradip.x10.mx/index.php/download-details/36/Helper) Check Readme.txt in Files section for installation instructions.
    5.0 out of 5 stars 1 Review
    Downloads: 2 This Week
    Last Update:
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  • 7
    Lobo Evolution - Java Web Browser

    Lobo Evolution - Java Web Browser

    Lobo Evolution is an extensible all-Java web browser and RIA platform

    Lobo Evolution is a fork of Lobo Browser. The project continuing the work of Lobo Browser(lobochief). Lobo Evolution is an extensible all-Java web browser and RIA platform. It supports HTML 4, HTML5 Javascript, CSS 3 and Java (Swing) rendering. CobraEvolution is the web browser's renderer API; also a Javascript-aware HTML parser. Lobo Evolution 5.0 relesed CHANGELOG: https://github.com/LoboEvolution/LoboEvolution/releases Read wiki: https://loboevolution.github.io/LoboEvolution/project-info.html Javadoc site: https://oswetto.github.io/LoboEvolution Now you can fork the project and help me with code. I'm waiting your first commit! Source code: https://github.com/LoboEvolution/LoboEvolution
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    5.0 out of 5 stars 1 Review
    Downloads: 2 This Week
    Last Update:
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  • 8
    MeanOS

    MeanOS

    The smallest and the most powerful operating system.

    The first decentralized, artificially intelligent, MEAN.js stack, operating system. Mean OS is the only operating system hosted anonymous using a P2P network and a suite of non-standard in-browser delivery mechanisms. Mean OS is specifically designed to support both Brave and Tor but is compatible with all other major browsers. Mean OS is Proud to be a BRAVE and TOR supporter, be free!!
    5.0 out of 5 stars 1 Review
    Downloads: 2 This Week
    Last Update:
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  • 9
    extensions, tools, utilities and plugins for the K-Meleon browser
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    5.0 out of 5 stars 1 Review
    Downloads: 2 This Week
    Last Update:
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  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

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  • 10

    seaart-save-metadata

    Chrome extention to save metadata of works on seart.ai in XMP in files

    (modified 2025-12-20) v1.1.0 Now it also works on `postDetail` pages. Chrome extention to save metadata of works on seart.ai in XMP and embed them into files. Works on /explore/detail pages and /postDetail/ pages. Does NOT work to videos. Filenames are automatically sanitized. It saves: prompt, model, checkpoint, lora, creator, source, etc. of each work. Press a button to start fetching metadata and download a work on a target page. # Installation Unpack the release and directly load it into Chrome with "Load unpacked".
    4.0 out of 5 stars 1 Review
    Downloads: 2 This Week
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  • 11
    Mozilla GPO plugin/module

    Mozilla GPO plugin/module

    Firefox and Thunderbird addon to manage settings using AD Group Policy

    Firefox, Thunderbird and Pale Moon autoconfig module for manage user preferences and user profile CA certificates from Active Directory Group Policy. I highly recommend using the Group Policy addon with Firefox ESR releases. Regular releases may contain changes to which the addon is not adapted. Since 53 Firefox support only WebExtensions. WebExtensions can't access to registry and can't do anything with application preferences. Therefore the **last version** of Firefox in which this **add-on** works - 52 ESR, because of this since 1.0 version its **autoconfig module**.
    5.0 out of 5 stars 3 Reviews
    Downloads: 1 This Week
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  • 12

    Country Filter for X

    Hide X posts and replies from the countries or regions you choose

    X now shows where every account is based. Country Filter for X is a free, open-source browser extension for Chrome, Edge and Firefox that uses it to hide or blur posts and replies from the countries or regions you pick. It adds a location tag next to every name, shows every place on your feed with counts, keeps filter counts per location, and has an optional Collected accounts page with one-click blocking. Nothing leaves your browser: it only talks to x.com using your own session. Not connected to X Corp.
    Downloads: 3 This Week
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  • 13

    Local Browser

    A portable Web Browser with access to the Operating System.

    Local Browser is a web browser based on webkit for easily building portable desktop applications using javascript. It is build on QT framework and it give access to the Operating System like executing a program, access to the file system and sqlite. It works on windows and linux.
    Downloads: 3 This Week
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  • 14
    The AppHere framework allows movement of applications & their state between computers. Uses JBoss.net server talking to C# client, which moves IE browsers inc. forms between PCs. SOAP interface lets any other device initiate transfer e.g. wireless PDA.
    Downloads: 2 This Week
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  • 15
    Clip and Share

    Clip and Share

    Clip and Share your world! Social sharing made easy.

    Clip and Share your world with the greatest of ease using this extension for Google Chrome! With just a couple of clicks, you can share content to social networks of your choice without having to mess with copying and pasting links, saving and uploading photos, or copying the exact text of an interesting quote only to find that it doesn't paste properly. Clip and Share makes sharing content online ENJOYABLE and QUICK! The following networks are supported by Clip and Share: * Facebook * Twitter * Tumblr * Google+ * MySpace * Reddit * StumbleUpon * Digg * Delicious * LinkedIn Clip and Share is NOT affiliated in any way with any of the above networks. It is built on existing public frameworks using proprietary software in order to make life a little bit easier.
    Downloads: 2 This Week
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  • 16
    A plug-in for Firefox that exports the user's bookmarks to CSV file format. We hope to expand to other formats (e.g. XML) soon!
    Downloads: 2 This Week
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  • 17
    ItsNat is a Component based AJAX Java Web Application Framework.No XML programming,no mixed view/code,no custom JavaScript.Only pure HTML,pure Java and server centric Swing-like programming with W3C standards where "The Browser is The Server"
    Downloads: 2 This Week
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  • 18
    MBR Cookie Consent

    MBR Cookie Consent

    Enterprise-grade GDPR/CCPA compliant cookie consent with IAB TCF v2.3

    MBR Cookie Consent is the most comprehensive, enterprise-grade cookie consent management plugin for WordPress - completely free. Built for publishers, e-commerce sites, and businesses that take privacy seriously. **100% Free. Forever.** All premium features included at no cost - no upsells, no restrictions, no hidden fees. **Enterprise-Grade.** Used by professional publishers, advertisers, and agencies worldwide. **Easy Setup.** Configure in 5 minutes with intelligent defaults and one-click policy generation.
    Downloads: 2 This Week
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  • 19
    PunyCode Domain Detection

    PunyCode Domain Detection

    Firefox add-on that stops look-alike (homograph) web addresses

    PunyCode Domain Detection is a Firefox add-on (desktop and Android) that stops look-alike web addresses before they open: аpple.com with a Cyrillic а, mozılla.com with a dotless ı, paypa1.com with a digit one. The address is checked before the request is sent, and a full-page warning stays until you decide: go to the real site, go back, or open anyway. The look-alike letters are highlighted and explained. Legitimate international names such as münchen.de are not flagged. Detection follows the Unicode security data (UTS #39) and protects 222 commonly phished sites plus your own. Everything is checked on your device: no network requests, no data collected. Manifest V3, MIT.
    Downloads: 2 This Week
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  • 20
    Robot Helper

    Robot Helper

    A browser WebExtension (beta) that generates test scripts

    # For automating test automation > A browser extension (beta) that generates test scripts ### Limitations - WebExtension only works on sites that allow content scripts. Add-on is based on - Robotcorder (https://github.com/sohwendy/Robotcorder) Additional features * Save test script * Syntax highlighting * Find script and jump to line * Added options to set the add-on Generate your RobotFramework Test Script via
    Downloads: 2 This Week
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  • 21
    Downloads: 2 This Week
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  • 22
    Simple Browser is a Windows-Application that is a web browser written entirely out of HTML, JavaScript and CSS. The source files are multi-platform and always available to be modified.. Simple Browser is great for use in any application in any language.
    Downloads: 2 This Week
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  • 23

    Simple Translate

    A powerful tool to translate selected words (or sentences) to a wide r

    Some useful notes: [1] Before using the extension, please make sure to visit the options page to adjust your settings. [2] To access the options page, right click the extension icon and select options. [3] All changes in the options page are auto saved. [4] To activate the extension after installation, please reload all your existing pages. [5] Please consider supporting this app by making a small donation :)
    Downloads: 2 This Week
    Last Update:
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  • 24
    Try It Yourself HTML5

    Try It Yourself HTML5

    PURE HTML5 editor for web designer and developer

    Your Simple HTML editor for Desktop Device. =============== Get Android App: https://play.google.com/store/apps/details?id=com.ulm.tryiteditorhtml =============== OS requirements: - Windows 7 and later are supported, older operating systems are not supported (and do not work). - Both x86 and amd64 (x64) binaries are provided for Windows. Please note, the ARM version of Windows is not supported for now. ======== Chrome app: HTML, XHTML and XML editor - https://goo.gl/bYR7fF == Browser Extensions == Chrome extension: http://bit.ly/1NiErH5 Add-on Firefox: http://mzl.la/1XJQXQC ==Angular Directive== Download Angular Syntax-Highligher. For documentation follow this link - http://ulmdevice.altervista.org/syntaxhigh/documentation/index.html
    Downloads: 2 This Week
    Last Update:
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  • 25
    ASProxy

    ASProxy

    Project moved to https://github.com/salarcode/ASProxy

    This project is moved to https://github.com/salarcode/ASProxy ASProxy is a free and open-source service which allows the user to surf the net anonymously. It hides your identity and allows you to pass any filtering system. ASProxy supports most current web technologies such as AJAX, HTTPS, JavaScript, FTP and so on
    5.0 out of 5 stars 1 Review
    Downloads: 1 This Week
    Last Update:
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