Browse free open source Browsers and projects for Windows below. Use the toggles on the left to filter open source 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.
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  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

    MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
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  • 1
    AutoWikiBrowser is a semi-automated Wikipedia editor, designed to make tedious, repetitive tasks quicker and easier. For more information, see the project homepage at http://en.wikipedia.org/wiki/Wikipedia:AutoWikiBrowser.
    Leader badge
    Downloads: 87 This Week
    Last Update:
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  • 2
    FreeWRL VRML/X3D browser
    FreeWRL is an Open Source, cross platform VRML2 and X3D compliant browser, with script, SAI and EAI support. Platforms supported: Linux and other Unix-style platforms; Mac OS/X; Windows. Support for mobile platforms (iOS, Android, QNX) is under development.
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    Downloads: 88 This Week
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  • 3
    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: 34 This Week
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  • 4
    CSSBox

    CSSBox

    Pure Java HTML / CSS rendering engine

    CSSBox is an (X)HTML/CSS rendering engine written in pure Java. Its primary purpose is to provide a complete information about the rendered page suitable for further processing. However, it also allows displaying the rendered document.
    Downloads: 14 This Week
    Last Update:
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  • Enterprise-grade ITSM, for every business Icon
    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity.

    Freshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
    Try it Free
  • 5
    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: 10 This Week
    Last Update:
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  • 6
    WebKit .NET
    WebKit .NET is a control library wrapper for WebKit written in C#. The aim is to make it easy for users to incorporate WebKit into their .NET applications.
    Downloads: 6 This Week
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  • 7

    Firefox Bookmarks.html Merger

    Program for intelligently merging firefox bookmars.html files.

    A python module that parses the 'bookmarks.html' files that firefox creates. Multiple bookmark files can be merged together and finally a new bookmarks.html file written. It depends apon the python module pyparsing.
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    Downloads: 20 This Week
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  • 8
    A fast and extremely lightweight graphical web browser for Windows, OS X, and Unix.
    Downloads: 24 This Week
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  • 9
    CHM Reader is a Firefox extension that make Compiled HTML Files can be viewed with Firefox directly.
    Downloads: 5 This Week
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  • Find Hidden Risks in Windows Task Scheduler Icon
    Find Hidden Risks in Windows Task Scheduler

    Free diagnostic script reveals configuration issues, error patterns, and security risks. Instant HTML report.

    Windows Task Scheduler might be hiding critical failures. Download the free JAMS diagnostic tool to uncover problems before they impact production—get a color-coded risk report with clear remediation steps in minutes.
    Download Free Tool
  • 10

    fbvlc

    Vlc web plugin based on FireBreath

    This project is not supported anymore. Please use WebChimera Plugin instead: http://WebChimera.org
    Leader badge
    Downloads: 16 This Week
    Last Update:
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  • 11
    A PrestaShop (http://www.prestashop.com) module for FAQ section. Related thread on prestashop forum : http://www.prestashop.com/forums/viewthread/33081/
    Downloads: 8 This Week
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  • 12
    This project is essentially a de-branded version of Mozilla Firefox, spun off from IceWeasel for Debian Linux distros.
    Downloads: 11 This Week
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  • 13
    Scratch is a simple markup language for use in applications such as weblogs and content management systems. Scratch provides simple inline and block tags for formatting and semantic markup.
    Downloads: 13 This Week
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  • 14
    ===NOTICE=== After releasing a few updates, but far less than we wanted, we’ve made the decision to stop the OptimizeGoogle Project. The reasons for the decision were that there were not enough people on the team to keep it going. Google is changing things every day and it has become more and more frustrating to look at all the functions go broke piece by piece. The code will remain GPL, perhaps another person or team is interested in picking this up. For now, thank you for all your patience, feedback and support. Description: OptimizeGoogle is a Firefox extension that enhances Google search results and other pages by adding extra information and removing unwanted information. Created to maintain and improve CustomizeGoogle which seems to have been abandoned.
    Downloads: 3 This Week
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  • 15
    Nightingale

    Nightingale

    A community supported fork of the Songbird media player and library.

    Nightingale is a community created fork of the Songbird media player. It is developed by a proud community and we are equally proud to bring you the most extensible, feature-rich media experience on Windows, Mac, and Linux. See the official website at http://getnightingale.com for the source, builds, and information. On Sourceforge, we provide our releases, the binary deps for building, as well as builds for testing purposes.
    Downloads: 11 This Week
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  • 16
    Web Spider, Web Crawler, Email Extractor

    Web Spider, Web Crawler, Email Extractor

    Free Extracts Emails, Phones and custom text from Web using JAVA Regex

    In Files there is WebCrawlerMySQL.jar which supports MySql Connection Please follow this link to get latest version https://sourceforge.net/projects/web-spider-web-crawler-extract/ Free Web Spider & Crawler. Extracts Information from Web by parsing millions of pages. Store data into Derby OR MySQL Database and data are not being lost after force closing the spider. - Free Web Spider , Parser, Extractor, Crawler - Extraction of Emails , Phones and Custom Text from Web - Export to Excel File - Data Saved into Derby Database - Written in Java Cross Platform See also Free Email Sender in this link: https://sourceforge.net/projects/gitst-free-email-ender/ Please install Microsoft OpenJDK to start the application https://www.microsoft.com/openjdk
    Downloads: 3 This Week
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  • 17
    Eclipse UXP Projects  Lun3r and Hydra

    Eclipse UXP Projects Lun3r and Hydra

    Lun3r/Hydra are forks of Pale Moon/Basilisk with more optimizations.

    Eclipse Lun3r is a fork of Pale Moon made for Windows XP. Some advantages over upstream and roytam1's New Moon are more optimizations and better interoperability with upstream. (using SQL storage intead of DBM) Eclipse Hydra is a fork of Basilisk made for Windows XP. Some advantages over upstream and roytam1's Serpent are more optimizations and better interoperability with upstream. (using SQL storage intead of DBM)
    Downloads: 10 This Week
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  • 18
    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!!
    Downloads: 5 This Week
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  • 19
    NetZ Browser

    NetZ Browser

    A JAVA based Multi tab Web Browser having emphasis on Features.

    What's new and Fixed....v1.02 __________________________________ 1) Added Complete iRemember Feature. 2) Added Messenger application. 3) Added new Icons. 4) Added new Window Option. 5) Fixed User Accounts. 6) Fixed a lot of bugs(back,forward, history related). 7) Added a new option "CLEAN" that would clean the address bar and would make the page blank. 8) Removed Stop button. 9) Added New Application icon. 10) Added Express Accounts feature. 10) Added in Downloads the Web browser server Application and the messenger server application. ___________________________________ IV) NOW what is iRemember??? It's a feature in this web browser that will not only help you to save your browsing progress at any time but also to resume it from any computer/anywhere around the world until you are using this browser.
    Downloads: 3 This Week
    Last Update:
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  • 20
    Fifth

    Fifth

    Free Opera-like web browser

    Fifth is a Linux-exclusive browser that carries the best features from Opera, as well as a few unique features that are likely to please Linux power users. It's based on a custom Webkit port to FLTK and comes licensed under the GPLv3.
    Leader badge
    Downloads: 10 This Week
    Last Update:
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  • 21
    BenchLab is a Web Application benchmarking framework using real web browsers.
    Downloads: 8 This Week
    Last Update:
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  • 22
    Bookmark manager that synchronizes bookmarks stored on same or different computers. Supported bookmarks formats: XBEL, IE, Mozilla, Netscape, Firefox, Opera. Bookmark synchronization over network is implemented using standard protocols (HTTP and FTP)
    Downloads: 8 This Week
    Last Update:
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  • 23
    Web Book Downloader

    Web Book Downloader

    Download websites as e-book: pdf, txt, epub.

    This application allows user to download chapters from website in 3 ways: - from table of contents; - from range: first chapter address, last chapter address; - by crawling from first chapter to n; In settings you can customize language, input(website encoding) for simplicity output is in the same encoding. If you want your language add new class into strings package, and new fields into Settings class and GUI menu(initialize method).
    Downloads: 4 This Week
    Last Update:
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  • 24
    silvertunnel - Java lib+browser for TOR
    silvertunnel.org is a project that provides an end-user browser, a Java library and additional Java security tools to easily access anonymity networks such as the Tor (torproject.org) network. Secure and easy to use. Tor4Java and Tor Browser. Attention: see project status on page https://sourceforge.net/p/silvertunnel/discussion/962278/thread/83dc2d02/#
    Downloads: 2 This Week
    Last Update:
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  • 25
    LeechCraft
    LeechCraft is a cross-platform modular "internet-client" application. It has plugins that allow one to browse the web, chat via instant messaging (like Jabber or IRC), read RSS/Atom feeds, download files via BitTorrent, Direct Connect and other protocols, play media files and much more.
    Downloads: 2 This Week
    Last Update:
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