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.

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  • 1
    Greasemonkey Port

    Greasemonkey Port

    Greasemonkey Port for the SeaMonkey Browser

    Please note that there are no guarantees that XPI installations will work in advertised minVersion and maxVersion. Farby did include some basics for SeaMonkey however a few things seem to be missing. The current HEAD here will probably not work directly in Firefox and nor should you be using this fork in Firefox. It is intended for SeaMonkey users only. Announcements at https://openuserjs.org/announcements/Greasemonkey_Port_Update
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    Downloads: 12 This Week
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  • 2
    ZK - Simply Ajax and Mobile
    ZK is an open-source Java framework for building modern web and mobile applications. It enables developers to create rich, interactive UIs using only Java — no JavaScript required. With 200+ Ajax-powered components, event-driven architecture, and support for popular technologies like Spring, Java EE, and JSP/JSF, ZK makes it simple to deliver powerful and user-friendly web applications.
    Downloads: 5 This Week
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  • 3
    Aimeos headless distribution

    Aimeos headless distribution

    Aimeos cloud-native, API-first ecommerce headless distribution

    Aimeos Headless is an open-source headless eCommerce distribution built on top of the Laravel framework, designed to provide a fast and scalable API-driven commerce backend. The project exposes a comprehensive REST and GraphQL API that allows developers to build custom storefronts or commerce applications using any frontend technology. Because the platform follows a headless architecture, it separates the commerce logic from the presentation layer, enabling developers to build web, mobile, or progressive web applications while relying on Aimeos for backend functionality. The framework includes a full set of commerce features such as product catalog management, order processing, and customer management while remaining highly customizable. It is designed to scale from small online shops to very large marketplaces and enterprise-level commerce platforms handling massive product catalogs.
    Downloads: 1 This Week
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  • 4
    Browserless

    Browserless

    The headless Chrome/Chromium driver on top of Puppeteer

    Browserless is an open-source headless browser automation library and service built on top of Puppeteer that simplifies the process of running and scaling Chromium-based browser tasks in production environments. It provides a high-level API for interacting with headless Chrome, allowing developers to perform operations such as generating PDFs, capturing screenshots, extracting text or HTML, and automating web navigation. The project is designed to act as a production-ready abstraction layer over Puppeteer, offering improved reliability, error handling, and scalability for real-world applications. Browserless includes built-in optimizations such as request blocking, automatic retries, and sensible defaults that improve performance when processing web pages. It can be used as a standalone library, a command-line tool, or a hosted API service that scales browser instances on demand.
    Downloads: 1 This Week
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  • 5
    FlexSlider

    FlexSlider

    An awesome, fully responsive jQuery slider plugin

    Simple, semantic markup. Supported in all major browsers, horizontal/vertical slide and fade animations. Multiple slider support, Callback API, and more. Hardware accelerated touch swipe support. Custom navigation options, compatible with the latest version of jQuery. Display your products in a neatly designed, responsive slideshow within WooCommerce. FlexSlider was built to serve up the best responsive jQuery slider around. I had built a few implementations of responsive sliders on different client projects and noticed that there was a glaring hole for plugin support with the concept. I wanted to build a plugin that would serve the newest of beginners, while providing seasoned developers a tool they could use with confidence. What has come forth is this, FlexSlider. I plan to maintain this plugin and provide support to users implementing FlexSlider into their sites. Responsive web design can be tricky, but I hope that FlexSlider serves to uncomplicate the process, just a little bit.
    Downloads: 1 This Week
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  • 6
    International Telephone Input

    International Telephone Input

    Plugin for entering and validating international telephone numbers

    A JavaScript plugin for entering and validating international telephone numbers. It adds a flag dropdown to any input, detects the user's country, displays a relevant placeholder and provides formatting/validation methods. Lots of initialization options for customization, as well as public methods for interaction. The user types their national number and the plugin gives you the full standardized international number. Navigate the country dropdown by typing a country's name, or using up/down keys. Automatically set the input placeholder to an example number for the selected country. Automatically select the user's current country using an IP lookup. Access the country data to create a separate country dropdown for an address form, and then listen for change events to keep the two dropdowns in sync. Use Twilio's API to build phone verification, SMS 2FA, appointment reminders, marketing notifications and so much more.
    Downloads: 1 This Week
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  • 7
    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: 1 This Week
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  • 8
    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: 1 This Week
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  • 9
    Magnific Popup

    Magnific Popup

    Light and responsive lightbox script with focus on performance

    Magnific Popup is a responsive lightbox & dialog script with focus on performance and providing best experience for user with any device. You may put any HTML content in each gallery item and mix content types. Three simple popups with different scaling settings. Fits horizontally and vertically, only horizontally, or with no gaps, zoom animation, close icon in top-right corner. If you wish to open the popup only after image is fully loaded, you may preload image via JS. Or use scaled down image instead of thumbnail. Zoom effect works only with images, for now. Animations are added with simple CSS transitions, you can make them look however you wish. Entered data is not lost if you open and close the popup or if you go to another page and then press back browser button. You have full control of what is displayed in popup, align it to any side via CSS, enable or disable scroll on right side of window, whatever.
    Downloads: 1 This Week
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  • 10
    OverlayScrollbars

    OverlayScrollbars

    A javascript scrollbar plugin which hides native scrollbars

    A javascript scrollbar plugin that hides native scrollbars, provides custom styleable overlay scrollbars and keeps the native functionality and feeling. The plugin combines the features of native scrolling (e.g. hotkeys, speed, smoothness, touch support etc.) and custom HTML & CSS. It does not replace the native scrollbars, it just hides them to guarantee 100% native scrolling. It also provides additional and highly customizable DOM elements to style your own scrollbars. To check how flexible the styling is, take a look at the examples in the styling demo. Textarea elements have extended support. Dependent on your options, textures can have dynamic width and height. This means the size of the text area is dependent of its content. For more information please read the documentation to the textarea options or check out the textarea demo. No-auto-wrapping (wrap="off") textures are also supported.
    Downloads: 1 This Week
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  • 11
    Qogir Gtk Theme

    Qogir Gtk Theme

    Qogir is a flat Design theme for GTK

    Qogir is a flat Design theme for GTK 3, GTK 2 and Gnome-Shell which supports GTK 3 and GTK 2-based desktop environments like Gnome, Unity, Budgie, Cinnamon Pantheon, XFCE, Mate, etc. In Gnome 42 can not use the Qogir-dark theme, so I renamed all dark themes to Dark, so you need to remove all old themes and reinstall the last version. Arc is a flat theme with transparent elements for GTK 3, GTK 2 and GNOME Shell which supports GTK 3 and GTK 2 based desktop environments like GNOME, Unity, Budgie, Pantheon, Xfce, MATE, etc.
    Downloads: 1 This Week
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  • 12
    React Virtualized

    React Virtualized

    React components for rendering large lists and tabular data

    Render Virtualized renders scattered or non-linear data. It can render data in grids, which renders checkerboard data. It also renders tabular data with virtualization along the vertical and horizontal axes, row heights and column widths must be calculated ahead of time and specified as a fixed size or returned by a getter function. Render Virtualized offers a wide variety of formats and customization features.
    Downloads: 1 This Week
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  • 13
    Saka Key

    Saka Key

    A keyboard interface to the web

    Saka Key lets you control your browser with keyboard shortcuts. It is easy to use, highly configurable and will transform how you surf the web. Put away your mouse. When the web isn't accessible, it's because people who author content don't understand the benefit of making it accessible. Saka Key leverages accessibility information to make the browsing experience better for everyone. I hope this will encourage the creation of accessible content. Keyboard shortcuts are only the beginning of this journey. Screen reading and voice commands are on the roadmap. Map keyboard keys to browser tasks like scrolling, clicking links, switching, moving, closing, muting, and refreshing tabs, zooming, and navigating pages. Keyboard shortcuts are flexible, powerful, and easy to customize. Saka Key lets you easily switch between shortcut profiles (e.g. left hand, right hand, default, Vimium), and lets you import and export your settings.
    Downloads: 1 This Week
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  • 14
    TopoJSON

    TopoJSON

    An extension of GeoJSON that encodes topology

    TopoJSON eliminates redundancy, allowing related geometries to be stored efficiently in the same file. For example, the shared boundary between California and Nevada is represented only once, rather than being duplicated for both states. A single TopoJSON file can contain multiple feature collections without duplication, such as states and counties. Or, a TopoJSON file can efficiently represent both polygons (for fill) and boundaries (for stroke) as two feature collections that share the same arc mesh. See How To Infer Topology for a visual explanation of how TopoJSON works. See Command-Line Cartography for an introduction to TopoJSON and related tools. See TopoJSON Format Specification for the format specification. To further reduce file size, TopoJSON can use quantized delta-encoding for integer coordinates. This is similar to rounding coordinate values (e.g., LilJSON), but with greater efficiency and control over loss of information.
    Downloads: 1 This Week
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  • 15
    Tree Style Tab

    Tree Style Tab

    Tree Style Tab, Show tabs like a tree.

    This extension to Firefox provides the ability to work with tabs as "trees". New tabs opened from the current tab are automatically organized as "children" of the current tab. Such "branches" are easily folded (collapsed) by clicking on the arrow shown in the "parent" tab, so you no longer need to suffer from too many visible tabs. If you want, you can restructure the tree via drag and drop. Such a tree of tabs will behave like a visual browsing history for you. For example, if you see a list of search results for a topic, each search result link will open in new child tab. New tabs opened from these "child" tabs will appear as descendants of their originating tabs. You'll easily dig and dig deeply, without losing your browsing trail - if you want to go back to the original search result, you just have to switch to the "root" tab. Moreover, each tree will reflect a group of tabs on a similar topic.
    Downloads: 1 This Week
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  • 16
    Yomichan

    Yomichan

    Japanese pop-up dictionary extension for Chrome and Firefox

    Yomichan turns your web browser into a tool for building Japanese language literacy by helping you to decipher texts which would be otherwise too difficult tackle. This extension is similar to Rikaichamp for Firefox and Rikaikun for Chrome, but it stands apart in its goal of being an all-encompassing learning tool as opposed to a mere browser-based dictionary. Interactive popup definition window for displaying search results. On-demand audio playback for select dictionary definitions. Kanji stroke order diagrams are just a click away for most characters. Custom search page for easily executing custom search queries. Support for multiple dictionary formats including EPWING via the Yomichan Import tool. Automatic note creation for the Anki flashcard program via the AnkiConnect plugin. Clean, modern code makes it easy for developers to contribute new features.
    Downloads: 1 This Week
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  • 17
    chai

    chai

    BDD / TDD assertion framework for node.js

    Chai is a BDD / TDD assertion library for node and the browser that can be delightfully paired with any javascript testing framework. Chai has several interfaces that allow the developer to choose the most comfortable. The chain-capable BDD styles provide an expressive language & readable style, while the TDD assert style provides a more classical feel. Plugins extend Chai's assertions to new contexts such as vendor integration & object construction. Developers can build their own plugins to share with community or use the plugin pattern to DRY up existing tests. You can also use it within the browser; install via npm and use the chai.js file found within the download. Browse our growing directory of custom plugins & vendor integrations to find the best tool for your needs. Chai has an extensive utility belt for plugin developers. Learn how to build your plugins & share.
    Downloads: 1 This Week
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  • 18
    jQuery Ajax File Uploader Widget

    jQuery Ajax File Uploader Widget

    Lightweight and very configurable jQuery plugin

    A jQuery plugin for file uploading using ajax(a sync); includes support for queues, progress tracking and drag and drop. Very configurable and easy to adapt to any Frontend design, and very easy to work along side any backend logic. The focus will be modern browsers, but also providing a method to know when the plugin is not supported. The idea is to keep it simple and lightweight. Basic Javascript knowledge is necessary to setup this plugin: how to set settings, callback events, etc. Initialize the plugin on any HTML element such as: <div /> to provide a Drag and drop area. All <input type="file"/> inside the main area element will be bound too. Optionally you can bind it directly to the <input />. Files will start uploading right after they are added. If using the queue system this option means the queue will start automatically after the first file is added.
    Downloads: 1 This Week
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  • 19
    slick

    slick

    The last carousel you'll ever need

    slick is an open source, responsive carousel plugin that offers a great number of breakpoints, CSS3 transitions, touch events and so much more. It creates fully responsive, customizable and mobile-friendly carousels that can work with any html element. Everything you’ll ever need for your carousel, slick can achieve quickly and easily. It features a comprehensive range of settings, events, methods and more so you can build a carousel in exactly the way you want. It supports IE8+ as well as most modern browsers (Chrome, Firefox, Safari). See it in action in demos on http://kenwheeler.github.io/slick/
    Downloads: 1 This Week
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  • 20
    XML Viewer Plus

    XML Viewer Plus

    A powerful XML Viewer - add-on for browser Firefox

    A powerful XML Viewer, supports text/regex and jQuery/CSS, XPath selectors ==== Release 1.2.6 - 17.06.2019 - Added utf-8 encode for xml viewer ==== Get your XML Editor and Validator on Play Store > https://play.google.com/store/apps/details?id=com.ulm.xmleditor ==== ## Libraries and techs used 1. `Vue` 2. `Vuex` 3. `lodash/debounce` 4. `jQuery` 5. `document.querySelectorAll` 6. `document.evaluate` for `XPath` 7. `bestzip` for packaging ### Limitations - WebExtension only works on sites that allow content scripts.
    Downloads: 9 This Week
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  • 21
    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
    Downloads: 3 This Week
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  • 22
    custombuttons
    Custom Buttons is a Mozilla Firefox extension, that allows you to add custom toolbar buttons.
    Downloads: 8 This Week
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  • 23
    CHM Reader is a Firefox extension that make Compiled HTML Files can be viewed with Firefox directly.
    Downloads: 3 This Week
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  • 24
    myrtille

    myrtille

    A native HTML4 / HTML5 Remote Desktop Protocol client

    Myrtille is a simple way to connect remote desktops and applications from a native web browser, without plugin, extension or configuration. For the end user, there is just need for a browser. Server side, it uses the .NET (C#) framework and the RDP protocol through an HTTP(S) gateway. It's very comparable to Guacamole (https://github.com/glyptodon) or FreeRDP-WebConnect (https://github.com/FreeRDP/FreeRDP-WebConnect), except it uses the Microsoft .NET (C#) technologies for a better integration with the Remote Desktop Services (RDS) layer. It also support HTML4, in addition to HTML5, for backward compatibility.
    Downloads: 10 This Week
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  • 25
    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.
    Downloads: 5 This Week
    Last Update:
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