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.

  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • Cut Data Warehouse Costs by 54% Icon
    Cut Data Warehouse Costs by 54%

    Easily migrate from Snowflake, Redshift, or Databricks with free tools.

    BigQuery delivers 54% lower TCO with exabyte scale and flexible pricing. Free migration tools handle the SQL translation automatically.
    Start Free
  • 1
    Image Format Saver

    Image Format Saver

    Right-click any picture and save it as JPG, PNG or WebP

    Right-click any picture on a web page and save it as a JPG, PNG or WebP file, or copy it as a PNG. The picture is converted on your own computer. Nothing is uploaded, and there is no account, no tracking and no adverts. A free, open source browser extension for Chrome, Microsoft Edge, Brave, Opera, Vivaldi and Firefox, from TechyGeeksHome. No account, no tracking, nothing to pay. The files here are copied from the GitHub releases. Use the main ZIP for Chrome, Edge, Brave, Opera and Vivaldi (Load unpacked) and the -firefox ZIP for Firefox. Full install guide: https://techygeekshome.info/browser-extensions/image-format-saver/
    Downloads: 0 This Week
    Last Update:
    See Project
  • 2
    Image Toolbar

    Image Toolbar

    Provides easy access to common image functions in Mozilla Firefox.

    This is a near parallel fork of Cussers wonderful Mozilla Firefox Add-on Extension with a few tweaks. "Single-click access to common actions for images (e.g. saving, copying, printing). This extension is intended to provide a replacement for the equivalent toolbar in Internet Explorer." See upstream at https://addons.mozilla.org/firefox/addon/image-toolbar With any luck I hope to have it pulled as a RFE. Please note since Firefox (Fx) went to the mundane signing I am no longer publishing a Fx xpi... however it does work in SeaMonkey (SM).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    Image in a New Tab Firefox Extension

    Image in a New Tab Firefox Extension

    Add the option to open an image in a new tab in firefox

    When you right-click an image in the content area of your firefox browser, you have the option to view the image. This extension will allow you to view it in a new tab.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 4
    I made this Firefox plugin, to meet my need of having the updated BSE SENSEX value always in my statusbar. This extension is for those who just want to be aware where the market is headed. The value is automatically updated hourly.
    Downloads: 0 This Week
    Last Update:
    See Project
  • $300 Free Credits to Build on Google Cloud Icon
    $300 Free Credits to Build on Google Cloud

    New customers can spin up VMs, build with AI, and query data at no cost.

    Put your $300 in credit toward real workloads, then keep building with free monthly usage for 20+ products. No commitment and no charge until you upgrade.
    Start Free
  • 5
    Instant Ad-Close Add-on

    Instant Ad-Close Add-on

    Simple interface for advertising blocking via the webRequest APIs

    Simple but powerful ad-blocking extension for your Browser; the main goals are simplicity of implementation and performance. --- Release 0.6.0 - Added some useful scripts on the web page to improve the security of links and forms --- Once installed, an icon should appear in your toolbar. Red means blocking is enabled, dark grey means disabled; click the icon to toggle. Preferences to customize the URI filters it uses. Details ------- This extension can only block external requests (images, Flash, XHR) via the URL patterns that you can set in the extension's preferences. It won't remove ad content that is part of the actual text of the HTML page. Through the extension options settings you also can hide private addresses from WebRTC/ICE/STUN. ========= To run and build browser extension from cmd or terminal type: - npm install --global web-ext - cd my/path/folder/InstantAd-Close - web-ext run to debug - web-ext build to make add-on
    Downloads: 0 This Week
    Last Update:
    See Project
  • 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: 0 This Week
    Last Update:
    See Project
  • 7
    Code standards-compliant CSS without hacks or workarounds, and include one .js to fix Internet Explorer's automatic margin bug.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8

    Internet Links Tagger (Link2Tag)

    This tool is aiming to associate any URL to a Tag.

    This tool is aiming to associate any URL to a Tag.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    Internote provides persistent sticky notes for Mozilla's Firefox web browser. Notes are extremely customizable, and are saved between sessions, reappearing on the page they were created on.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Ship Agents Faster Icon
    Ship Agents Faster

    Transform your applications and workflows into powerful agentic systems at global scale.

    Gemini Enterprise Agent Platform lets you rapidly build, scale, govern and optimize production-ready agents grounded in your organization's data. The platform enables developers to build custom or pre-built agents for virtually any use case. New customers get $300 in free credits.
    Start Free
  • 10
    A Firefox tutorial add-on for adult absolute beginners, to provide information on and to build up understanding of the threats and features of the web. Suggestions to security plugins, links to web howto's. Includes basic navigation help.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    Your own portable PC system built by integrating existing Open Source components. This mobile metasystem utilizes the internet's web hosting resources and is accessed via any web browser enabled appliance from your home, work, school, library, cafes, etc.
    5.0 out of 5 stars 1 Review
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    jQuery library to make applications to draw on the web. It generates a pure html document!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    a group of classes for Javascript developers.it's compatible in IE and firefox.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    JAS Carousel is yet another javascript carousel library. I needed one that took advantage of jQuery/jQuery UI and would resize when the browser windows would resize.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    The JASPA DOM API is a full abstraction layer for cross-browser scripting. It is written in a strongly-typed language modelled on AS3, and the JASPA compiler converts it into regular JavaScript.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16

    JAVIER

    JAvascript Voicexml InterpretER

    JAVIER is a JAvascript Voicexml InterpretER, designed (but not restricted) to run inside a web browser, its main engine has less than 1000 lines of code. It's maybe, the tiniest but (almost) FULL VoiceXML implementation.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17

    JS Password Generator with Rulesets

    JavaScript password generator with ruleset checking.

    This javascript random password generator is different, in that the password generated must conform to a particular set of rules. The rules currently supported are: - Maximum # of Repeated characters - Minimum # of characters - Maximum # of characters - Minimum Upper, Lower, and Numbers To be done: Minimum # of special Characters
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18

    JS Vim

    jsvim 4: xvi online

    JSVim intends to provides Vim to any textarea. The javascript text editor core is now ported using Emscripten and written using web components. Stable archives at http://www.migniot.com/JSVim.html, roadmap available at http://home.migniot.com/smigniot/Zion/JSVim%20Roadmap.html
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    JSAX - JavaScript Abstractions for X(HT)ML This is a JavaScript framework which is compatibel with the latest versions of Mozilla, Opera, Konqueror(+safari) and M$-IE.
    5.0 out of 5 stars 1 Review
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    This project combines the DHTML calendar widget (http://www.dynarch.com/projects/calendar/) with Java Server Faces (http://java.sun.com/javaee/javaserverfaces/index.jsp) into a jsf component.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    The JSChess is JavaScript Chess. It completely real time, java-or-activex-less, platform independent version of chess.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Javascript module loader with an emphasis on making modules as easy as possible to use and to write.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    JSPackaging is a JavaScript framework that provides simple directives for defining, loading & importing uniquely named packages of JavaScript modules. UPDATE: This project now exists as Ajile at http://sf.net/projects/ajile & http://ajile.iskitz.com.
    5.0 out of 5 stars 1 Review
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24

    JavaScripTools

    JavaScript utilities, including input masks and data parsers

    JavaScripTools is a set of scripts, including: a powerful dynamic table, a set of parsers. flexible masks for user inputs and a library of misc and useful functions. There is also the JavaScripTags, that have JSP custom tags to help using JavaScripTools
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    JavaScript Vector and Matrix objects acts as a collection of objects or elements. Has methods similar to Java, C++ Vector. The Matrix is a 2D Vector.
    Downloads: 0 This Week
    Last Update:
    See Project