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.

  • MongoDB Atlas runs apps anywhere Icon
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  • 1
    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
    Last Update:
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  • 2
    Notifier for GitHub

    Notifier for GitHub

    Get notified about new GitHub notifications

    Checks for new GitHub notifications every minute and shows the number of notifications you have and shows desktop notifications as well. Displays your GitHub notifications unread count. It checks the GitHub Notifications API every minute. Supports GitHub Enterprise and an option to only show the unread count for issues you're participating in. Make sure to add a token to the Options page. Both requested permissions are optional, so you can just decline if you don't want them. The first time you click on the extension icon, it will ask you for access to browser tabs. We need this to know if there is already an opened GitHub notifications page and switch to it if so. If you want to receive desktop notifications, you can enable them on the extension options page. You will then be asked for the notification's permission.
    Downloads: 1 This Week
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  • 3
    POI POI POI

    POI POI POI

    Scalable KanColle browser and tool

    poi is a scalable browser and tool set for Kantai Collection(KanColle). Key features include proxy,HTTP, Socks5 and PAC (Experimental). Cache, including custom cache. Data synthesis and analysis. Notification and plugin support for extensive functionalities.
    Downloads: 1 This Week
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  • 4
    Reactive Extensions for JavaScript

    Reactive Extensions for JavaScript

    An API for asynchronous programming with observable streams

    An API for asynchronous programming with observable streams. The Observer pattern done right. ReactiveX is a combination of the best ideas from. The Observer pattern, the Iterator pattern, and functional programming. ReactiveX is everywhere, and it's meant for everything. Available for idiomatic Java, Scala, C#, C++, Clojure, JavaScript, Python, Groovy, JRuby, and others. Embrace ReactiveX's asynchronicity, enabling concurrency and implementation independence. Manipulate UI events and API responses, on the Web with RxJS, or on mobile with Rx.NET and RxJava. Avoid intricate stateful programs, using clean input/output functions over observable streams. ReactiveX's operators often reduce what was once an elaborate challenge into a few lines of code. Traditional try/catch is powerless for errors in asynchronous computations, but ReactiveX is equipped with proper mechanisms for handling errors.
    Downloads: 1 This Week
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  • 5
    Responsively App

    Responsively App

    A modified browser that helps in responsive web development

    Want to develop responsive web apps 5x faster? This is the must-have DevTool for you! Responsively App is a modified browser designed to make responsive web development much easier and faster. It gives you an instant preview of all target screens in a single window, and lets you use the dev tools you already know straight from the browser. For Front-End developers, it’s simply a great time-saver! Responsively App’s layout can be customized according to your needs, plus you’ve got nifty features like one-click inspect elements and screenshot, hot reloading and more! Start building better and faster with Responsively App now!
    Downloads: 1 This Week
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  • 6
    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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  • 7
    Sass

    Sass

    An extension of CSS, adding nested rules, variables, mixins and more

    Sass is the most mature, stable, and powerful professional grade CSS extension language in the world. Sass is completely compatible with all versions of CSS. We take this compatibility seriously, so that you can seamlessly use any available CSS libraries. Sass boasts more features and abilities than any other CSS extension language out there. The Sass Core Team has worked endlessly to not only keep up, but stay ahead. Sass has been actively supported for over 14 years by its loving Core Team. Over and over again, the industry is choosing Sass as the premier CSS extension language. Sass is actively supported and developed by a consortium of several tech companies and hundreds of developers. There are an endless number of frameworks built with Sass. Compass, Bourbon, and Susy just to name a few.
    Downloads: 1 This Week
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  • 8
    Serverless Webpack

    Serverless Webpack

    Serverless plugin to bundle your lambdas with Webpack

    A Serverless Framework plugin to build your lambda functions with Webpack. When enabled in your service configuration, functions are packaged and compiled individually, resulting in smaller Lambda packages that contain only the code and dependencies needed to run the function. This allows the plugin to fully utilize WebPack's Tree-Shaking optimization. Configuration possibilities range from zero-config to fully customizable. Support of serverless package, serverless deploy and serverless deploy function. Support of serverless invoke local and serverless invoke local --watch. Support of serverless run and serverless run --watch. Integrates with serverless-offline to simulate local API Gateway endpoints. Cleaned up configuration. You should now use a custom.webpack object to configure everything relevant for the plugin. The old configuration still works but will be removed in the next major release.
    Downloads: 1 This Week
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  • 9
    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: 1 This Week
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  • 10
    Toggl Track

    Toggl Track

    Toggl Track browser extension for Chrome and Firefox

    Track time in Toggl Track without leaving your browser and the online apps you usually spend time on. Available for Chrome and Firefox. Our browser extension (previously called Toggl Button) for Chrome and Firefox lets you track time in your favorite web tools and wherever you are on the web. The Toggl Track browser extension integrates with 100+ popular tools. Toggl Track browser extension was previously called Toggl Button. Beyond the name and colors, no other changes have been made. Microsoft Edge has support for Chromium extensions, so you can use the Toggl Track browser extension on Microsoft Edge by downloading it from the Chrome Store. Once you install the add-on, a Toggl Track icon will be added to the right of the address bar. Click on the Toggl Track browser extension to reveal the timer’s dropdown. Here you can check your current time entry, change settings, sync, log out or stop your timer.
    Downloads: 1 This Week
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  • 11
    Traceur

    Traceur

    Traceur is a JavaScript.next-to-JavaScript-of-today compiler

    Traceur is a JavaScript.next-to-JavaScript-of-today compiler that allows you to use features from the future today. Traceur supports ES6 as well as some experimental ES.next features. Traceur's goal is to inform the design of new JavaScript features which are only valuable if they allow you to write better code. Traceur allows you to try out new and proposed language features today, helping you say what you mean in your code while informing the standards process. JavaScript's evolution needs your input. Try out the new language features. Tell us how they work for you and what's still causing you to use more boilerplate and "design patterns" than you prefer. You can use some language features right now and even try it out in your browser here. Just type in some code and see what Traceur produces.
    Downloads: 1 This Week
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  • 12
    Typora Plugin

    Typora Plugin

    Typora plugin. Feature enhancement tool

    A plugin framework for the Typora markdown editor that allows users to extend its functionality by adding custom features and enhancements.
    Downloads: 1 This Week
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  • 13
    URI.js

    URI.js

    Javascript URL mutation library

    URI.js is a javascript library for working with URLs. It offers a "jQuery-style" API (Fluent Interface, Method Chaining) to read and write all regular components and a number of convenience methods like .directory() and .authority(). URI.js offers simple, yet powerful ways of working with query string, has a number of URI-normalization functions and converts relative/absolute paths. While URI.js provides a jQuery plugin. URI.js itself does not rely on jQuery. You don't need jQuery to use URI.js. URI.js (without plugins) has a gzipped weight of about 7KB, if you include all extensions you end up at about 13KB. So unless you need second level domain support and use URI templates, we suggest you don't include them in your build. Clone the URI.js repository or use a package manager to get URI.js into your project. See the build tool or use Google Closure Compiler.
    Downloads: 1 This Week
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  • 14
    Vimperator-labs
    Writing efficient user interfaces is the main maxim, here at Vimperator labs. We often follow the Vim way of doing things, but extend its principles when necessary. Towards this end, we’ve created the liberator library for Mozilla-based applications, to encapsulate as many of these general principles as possible, and liberate developers from the tedium of reinventing the wheel.´Vimperator is a Firefox browser extension with strong inspiration from the Vim text editor, with a mind towards faster and more efficient browsing. It has similar key bindings and you could call it a modal web browser, as key bindings differ according to which mode you are in. For example, it has a special Hint mode, where you can follow links easily with the keyboard only. Also most functionality is available as commands, typing:back will go back within the current page history, just like hitting the back button in the toolbar.
    Downloads: 1 This Week
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  • 15
    Vue-Lazyload

    Vue-Lazyload

    A Vue.js plugin for lazyload your Image or Component in your app

    Vue module for lazyloading images in your applications. Some of goals of this project worth noting include being lightweight, powerful and easy to use, work on any image type, add loading class while image is loading. It supports both of Vue 1.0 and Vue 2.0. You can configure which events you want vue-lazyload by passing in an array of listener names. This is useful if you are having trouble with this plugin resetting itself to loading when you have certain animations and transitions taking place. use Intersection Observer to to improve performance of a large number of nodes. If only the event is provided, remove all listeners for that event. Manually trigger lazy loading position calculation.
    Downloads: 1 This Week
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  • 16
    Web-Maker

    Web-Maker

    A blazing fast & offline frontend playground

    Web-Maker is an offline playground for your web experiments. Something like CodePen or JSFiddle, but much more faster and works offline because it runs completely on your system. Supports Preprocessors: HTML (Pug & Markdown), CSS (SCSS, LESS & Stylus, Atomic CSS) & JavaScript (ES6, TypeScript & CoffeeScript). Hi! I am Kushagra Gour. Web Maker is a free and open-source project. To keep me motivated for working on such open-source and free side projects, I have launched a Patreon campaign. Your pledge, no matter how small, will act as an appreciation towards my work and keep me going forward making Web Maker more awesome. Very easily accessible. Simply open a new tab in Chrome! (in chrome extension only). Capture preview screenshot (in Chrome extension only). Multiple layouts to choose from. Capture preview screenshot (in Chrome extension only). Save as HTML file. Edit in CodePen.
    Downloads: 1 This Week
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  • 17
    Zepto.js

    Zepto.js

    JavaScript library for modern browsers with a jQuery compatible API

    Zepto is a minimalist JavaScript library for modern browsers with a largely jQuery-compatible API. If you use jQuery, you already know how to use Zepto. While 100% jQuery coverage is not a design goal, the APIs provided match their jQuery counterparts. The goal is to have a ~5-10k modular library that downloads and executes fast, with a familiar and versatile API, so you can concentrate on getting stuff done. Zepto is open source software and is released under the developer and business-friendly MIT license. Note that some optional features of Zepto specifically target mobile browsers; as the original project goal was to specifically provide a leaner alternative to jQuery for the mobile web. Zepto is a good choice for browser extensions (for Safari, Chrome and Firefox) and to develop HTML-based views within native app frameworks, such as PhoneGap. In short, Zepto is expected to work in every modern browser and browser-like environment.
    Downloads: 1 This Week
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  • 18
    ZetaJS

    ZetaJS

    JS wrapper for ZetaOffice in the browser

    The zeta.js library provides the facilities to run an instance of ZetaOffice integrated into your web site, allowing you to control it with JavaScript code via the LibreOffice UNO technology. Use cases range from an in-browser office suite that looks and feels just like its desktop counterpart, to fine-tuned custom text editing and spreadsheet capabilities embedded in your website, to a headless zetajs instance that does document conversion in the background.
    Downloads: 1 This Week
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  • 19
    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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  • 20
    eslint-plugin-vue

    eslint-plugin-vue

    ESLint plugin for Vue.js

    ESLint plugin for Vue.js. This plugin allows us to check the template and script of .vue files with ESLint, as well as Vue code in .js files. This plugin supports the basic syntax of Vue.js 3.2, script setup, and CSS variable injection, but the ref sugar, an experimental feature of Vue.js 3.2, is not yet supported. If you have issues with these, please also refer to the FAQ. If you can't find a solution, search for the issue and if the issue doesn't exist, open a new issue. Be aware that depending on the code samples you write in tests, the RuleTester parser property must be set accordingly (this can be done on a test-by-test basis). The default JavaScript parser must be replaced because Vue.js single file components are not plain JavaScript, but a custom file format. vue-eslint-parser is a replacement parser that generates an enhanced AST with nodes that represent specific parts of the template syntax, as well as the contents of the script tag.
    Downloads: 1 This Week
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  • 21
    gooreplacer

    gooreplacer

    A browser extension to modify HTTP requests

    At first, Gooreplacer was created for redirecting Google Ajax/Api/Themes to other CDN to bypass Great Firewall since pages referring to those are slow as molasses. Most users prefer gooreplacer than other similar extensions(HTTPS Everywhere/Redirector) for ease of use. Why not give it a try? gooreplacer was originally born to solve the inability to access Google resources (Ajax, API, etc.) in China, which caused the page loading speed to be extremely slow. On this basis, the new version adds more practical functions, which can facilitate users to block certain requests and modify HTTP requests/responses headers. Support online rules, mainly used to redirect Google resources, user can change. Import and export rules to facilitate user backup and synchronization (rules can be used in Chrome/Firefox/Edge..) It is recommended to download in the browser's plug-in store.
    Downloads: 1 This Week
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  • 22
    jqGrid

    jqGrid

    jQuery grid plugin

    jqGrid is an Ajax-enabled JavaScript control that provides solutions for representing and manipulating tabular data on the web. Since the grid is a client-side solution, loading data dynamically through Ajax callbacks, it can be integrated with any server-side technology, including PHP, ASP, Java Servlets, JSP, ColdFusion, and Perl. Improve the maxGridHeigh method. Add a third parameter to indicate the minimum height at which the method run. jqGrid uses a jQuery JavaScript Library and is written as a plug-in for that package. JqGrid was developed by Tony Tomov at Trirand Inc., a software development firm based in Sofia. Trirand specializes in the development of web components and embraces free and open standards like jQuery, ThemeRoller, & jQuery UI. Tony got the idea for jqGrid when he needed an easy way to represent database information in a project. The first requirement was speed and the second, was independence from server-side technology and the database backend.
    Downloads: 1 This Week
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  • 23
    passff

    passff

    zx2c4 pass manager extension for Firefox, Chrome and Opera

    zx2c4 pass management extension for Mozilla Firefox. Pending Chrome port. Official signed version can be found on the Mozilla add-on page. This extension will allow you to access your zx2c4 pass repository directly from your web browser. You can choose to automatically fill and submit login forms if a matching password entry is found. Add-on that allows users of the unix password manager 'pass' to access their password store from Firefox. PassFF allows users of the unix password manager pass (see below) to access their password repository directly from Firefox. PassFF can be configured to auto-fill and auto-submit login forms when a matching password entry is found.
    Downloads: 1 This Week
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  • 24
    pjax

    pjax

    pushState + ajax = pjax

    pjax loads html from your server into the current page without a full page load. It's ajax with real permalinks, page titles, and a working back button that fully degrades. Check the box to toggle pjax. Whenever the time changes, a full page load has happened. If the time doesn't change, no full page load has occurred. The idea is you can't tell the difference between pjax page loads and normal page loads. On complicated sites, browsing just "feels faster." pjax is a jQuery plugin that uses ajax and pushState to deliver a fast browsing experience with real permalinks, page titles, and a working back button. pjax works by fetching HTML from your server via ajax and replacing the content of a container element on your page with the loaded HTML. It then updates the current URL in the browser using pushState.
    Downloads: 1 This Week
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  • 25
    vue-i18n

    vue-i18n

    Internationalization plugin for Vue.js

    You can introduce internationalization into your app with simple API. In addition to simple translation, support localization such as pluralization, number, datetime, etc. You can manage locale messages on single file component. Vue I18n is internationalization plugin of Vue.js. It easily integrates some localization features to your Vue.js Application. You can translate with pluralization. You must define the locale that have a pipe | separator, and define plurals in pipe separator. Such pluralization, however, does not apply to all languages (Slavic languages, for example, have different pluralization rules). In order to implement these rules you can pass an optional pluralizationRules object into VueI18n constructor options. If your current locale is not found in a pluralization map, the default rule of the english language will be used.
    Downloads: 1 This Week
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