Open Source Windows Browsers
Sort By:
Browsers for Windows
View 122 business solutionsBrowse 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.
-
$300 in Free Credit Towards Top Cloud ServicesStart your project in minutes. After credits run out, 20+ products include free monthly usage. Only pay when you're ready to scale.
-
Gemini 3 and 200+ AI Models on One PlatformBuild generative AI apps with Vertex AI. Switch between models without switching platforms.
-
1
PortableApps.com
Portable software for cloud, local, and portable USB drives
PortableApps.com is the world's most popular portable software solution allowing you to take your favorite software with you. A fully open source and free platform, it works from any synced cloud folder (DropBox, Google Drive, Box, etc), from your local PC on an internal or external drive, or on any portable storage device (USB flash drive, memory card, portable SSD or hard drive, etc) moved between PCs. With millions of users all over the world, nearly 500 real open source and freeware apps in our main app store (no shovelware), compatible commercial software, and partners in hardware industry, PortableApps.com is the most complete solution for life on the go. -
2
Safe Exam Browser is a webbrowser-environment to carry out online-exams safely. The software changes any computer into a secure workstation. It regulates the access to any utilities and prevents students from using unauthorised resources.
-
3
Tor Browser
Browser for using Tor on Windows, Mac OS X or Linux
Tor Browser enables you to use Tor on Windows, Mac OS X, or Linux without needing to install any software. Tor is a software that bounces your communications around a distributed network of relays run by volunteers. This effectively prevents anyone watching your Internet connection from learning what sites you visit; it prevents the sites you visit from learning your physical location; and allows you access to sites which are blocked. Tor Browser can run off a USB flash drive, comes with a pre-configured web browser to protect your anonymity, and is self-contained (portable). -
4
K-Meleon
A fast and customizable web browser for Windows using Gecko.
K-Meleon is a fast and customizable web browser that can be used instead of Internet Explorer on Windows. Powered by the same Gecko engine as the Firefox and Mozilla browsers, K-Meleon provides users with a secure browsing experience. -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
-
5
Cromite
Cromite a Bromite fork with ad blocking and privacy enhancements
Cromite is an open-source web browser project that originated as a fork of Bromite—a Chromium-based browser focused on ad blocking and enhanced privacy—and continues to evolve with built-in privacy protections and content filtering across Android, Windows, and Linux platforms. It retains the core goal of limiting tracking and intrusive ads by integrating ad blocking directly into the browser engine rather than relying on external extensions, all while striving to reduce telemetry, aggressive analytics, and close manufacturer integration. Cromite emphasizes user choice and control over web content, offering privacy-oriented settings and mitigations such as anti-fingerprinting measures and configurable filters to block unwanted elements. The project extends its focus beyond Android to desktop platforms, building packages that let users benefit from a more private browsing experience without sacrificing compatibility with modern web standards. -
6
Thorium for Windows
Chromium fork for Windows named after radioactive element No. 90
Thorium for Windows is the Windows-focused distribution of the Thorium web browser, a privacy- and feature-enhanced Chromium fork named after the radioactive element and built to support modern web browsing with added controls and tweaks not found in standard Chromium builds. It aims to provide a browsing experience similar to Google Chrome in terms of compatibility with web apps and extensions but injects user-centric changes like privacy controls enabled by default, content filtering, and interface tweaks that appeal to advanced users. Thorium often includes enhancements such as Global Privacy Control support, improved media controls, and UI responsiveness tweaks that elevate everyday browsing. The Windows variant supplies installers and portable builds so users can deploy it easily on desktops without much configuration. It continues a tradition of community-driven browser forks that balance performance, privacy, and usability outside mainstream vendor ecosystems. -
7
Brave Browser
The faster, safer desktop browser for macOS, Windows, and Linux
Brave is a free and open source browser that lets you browse safer and faster by blocking ads and trackers. Brave blocks harmful advertising, tracking pixels and cookies, and redirects sites to HTTPS. Brave is available for macOS, Windows, and Linux. -
8
DB Browser for SQLite
The DB Browser for SQLite
DB Browser for SQLite (DB4S) is a high quality, visual, open source tool to create, design, and edit database files compatible with SQLite. DB4S is for users and developers who want to create, search, and edit databases. DB4S uses a familiar spreadsheet-like interface, and complicated SQL commands do not have to be learned. This program is not a visual shell for the sqlite command line tool, and does not require familiarity with SQL commands. It is a tool to be used by both developers and end users, and must remain as simple to use as possible in order to achieve these goals. Import and export records as text, import and export tables from/to CSV files, import and export databases from/to SQL dump files, issue SQL queries and inspect the results, examine a log of all SQL commands issued by the application, plot simple graphs based on table or query data. -
9
r3dfox - Modern Firefox for Windows 7
Modern Firefox based web browser for Windows Vista & 7!
r3dfox or r3dactedfox is a fork of release branch Mozilla Firefox made for Windows Vista, 7, and 8. r3dfox also comes with limited compatibility for Windows XP using One Core API. The main goal is to be similar to stock Firefox while providing Windows Vista & 7 compatibility as a fork point. However there are also some additional tweaks and adjustments. -
Fully Managed MySQL, PostgreSQL, and SQL ServerCloud SQL handles your database ops end to end, so you can focus on your app.
-
10
Selenium
Browser automation framework and ecosystem
Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily it is for automating web applications for testing purposes, but is certainly not limited to just that. Boring web-based administration tasks can (and should) also be automated as well. If you want to create robust, browser-based regression automation suites and tests, scale and distribute scripts across many environments, then you want to use Selenium WebDriver, a collection of language specific bindings to drive a browser - the way it is meant to be driven. If you want to create quick bug reproduction scripts, create scripts to aid in automation-aided exploratory testing, then you want to use Selenium IDE; a Chrome and Firefox add-on that will do simple record-and-playback of interactions with the browser. If you want to scale by distributing and running tests on several machines and manage multiple environments from a central point. -
11
Helium Browser
Private, fast, and honest web browser
Helium is a Chromium-based web browser designed to deliver privacy, speed, and simplicity by removing Google’s proprietary services, telemetry, and bloat. It’s built atop ungoogled-chromium, extending its philosophy with additional privacy features, design refinements, and user experience improvements aimed at transparency and control. Helium blocks ads and trackers by default through an integrated, unbiased uBlock Origin extension prepackaged as a native browser component. Its UI and feature set emphasize minimalism, no “smart” recommendations, account sync, or background data collection, resulting in a distraction-free browsing experience that respects user autonomy. The browser is available across macOS, Linux, and Windows, each version built from a fully open source pipeline for reproducibility and trust. Development focuses on maintaining compatibility with modern web standards while decoupling Chromium from its Google dependencies and services. -
12
Lightpanda Browser
Lightpanda: the headless browser designed for AI and automation
Lightpanda is an open-source headless browser designed specifically for automation, artificial intelligence workflows, and large-scale web interaction tasks. Unlike traditional browsers that include full graphical rendering engines meant for human users, Lightpanda is built from scratch to operate entirely in headless mode, focusing only on the components required for programmatic web interaction. This design allows it to execute JavaScript and interact with web pages while avoiding the overhead associated with rendering images, fonts, and layout elements intended for visual display. The browser is implemented using the Zig programming language and integrates the V8 JavaScript engine to run modern web applications and scripts efficiently. Because it avoids graphical rendering and other heavy browser components, the system uses significantly less memory and launches almost instantly compared to conventional browsers such as Chrome. -
13
Otter Browser
Project aiming to recreate the best aspects of Opera 12.x UI using Qt5
-
14
Mercury Browser
Privacy-focused web browser fork of Firefox
Mercury Browser is an optimized, privacy-focused web browser that is a fork of Mozilla Firefox. It incorporates compiler optimizations such as AVX, AES, LTO, and PGO to enhance performance and security. With features derived from projects like LibreWolf, Waterfox, and Ghostery, Mercury disables telemetry and debugging elements by default, ensuring a more private browsing experience. It also includes usability patches that bring back features like the classic top bar and supports unsigned extensions for added flexibility. Mercury is tailored for users prioritizing speed and privacy and is available for both Linux and Windows. -
15
Floorp Browser
All of source code of version 10 or later of Floorp Browser
By default, Floorp includes a robust tracking blocker, protecting users from a variety of malicious trackers lurking on the web. Additionally, it provides fingerprinting protection. Floorp's layout customization is unlimited. Move the tab bar to the bottom of the window, hide the title bar, and more. Create your own Floorp. In addition to the usual Firefox theme customization, Floorp allows you to switch between five different interface designs, including OS-specific themes. Floorp is based on Firefox ESR. Floorp will be updated every 4 weeks, with security updates provided before each Firefox release. We don't collect personal information from users. We don't track users. We don't sell user data. We have no affiliation with any advertising companies. Floorp's source code is entirely open, allowing anyone to view it and contribute to the project. Not only is the browser itself open source, but the build environment is as well. -
16
Ungoogled Chromium Windows
Windows packaging for ungoogled-chromium
Ungoogled Chromium Windows is the Windows build configuration and tooling for Ungoogled Chromium, a fork of the Chromium browser that removes Google-specific services, tracking, and invasive integrations to deliver a more privacy-respectful, user-controlled web experience on Microsoft platforms. This project specifically targets the Windows ecosystem, supplying build scripts, patches, and configuration files necessary to compile Chromium without telemetry, alternate error reporting, Google update mechanisms, built-in Google APIs, and other remote-service dependencies commonly embedded in stock builds. Users who need a modern browser engine with wide compatibility but without Google branding or background services can leverage this repository to produce Windows installers or portable builds that respect local privacy preferences. -
17
Zen Browser
Experience tranquillity while browsing the web
Experience tranquillity while browsing the web without people tracking you. Beautifully designed, privacy-focused, and packed with features. We care about your experience, not your data. With Zen's Theme Store, you can customize your browsing experience to reflect your unique style and preferences. Choose from a wide array of themes, colors, and layouts to make Zen truly your own, transforming your browser into a personalized digital space. Zen thrives on the contributions of its vibrant community. As an open-source project, Zen encourages collaboration and innovation, allowing users and developers alike to shape the future of the browser. Zen Browser is always up to date, ensuring that you have the latest features and security updates. With automatic updates, you can rest easy knowing that your browser is secure and up to date. Zen is based on Firefox, ensuring that your browsing experience prioritizes security and privacy. -
18
Cyberfox
A Mozilla-based browser designed for the 64-bit architecture
Cyberfox is a Mozilla-based Internet browser designed to take advantage of 64-bit architecture but a 32-bit version is also available. The application provides a higher memory performance when navigating your favorite pages. Compatible Windows Operating Systems: Windows 7/7 SP1 OS x86|x64 Windows 8/8.x OS x86|x64 Windows 10 OS x86|x64 (Windows XP Unsupported, Windows Vista Unsupported) Dedicated support forums. https://8pecxstudios.com/Forums/index.php Dedicated Contact Forms. https://cyberfox.8pecxstudios.com/contact-us Profile Buddy: Transfer your profile from any Mozilla base browser. https://8pecxstudios.com/Forums/viewtopic.php?f=6&t=350 See notifications for critical release information: https://cyberfox.8pecxstudios.com/notifications Tell us what you think and write a review. Future direction of project https://8pecxstudios.com/Forums/viewtopic.php?f=6&t=1756 -
19
Buster
Captcha solver extension for humans
Save time by asking Buster to solve captchas for you. Buster is a Firefox extension which helps you to solve difficult captchas by completing reCAPTCHA audio challenges using speech recognition. Challenges are solved by clicking on the extension button at the bottom of the reCAPTCHA widget. It is not guaranteed that challenges are always solved, the limitations of the technology need to be considered. The continued development of Buster is made possible thanks to the support of awesome backers. If you'd like to join them, please consider contributing with Patreon, PayPal or Bitcoin. The success rate of the extension can be improved by simulating user interactions with the help of a client app. Follow the instructions from the extension's options to download and install the client app on Windows, Linux and macOS, or get the app from this repository. -
20
Chromium Portable
Portable version of the Chromium web browser
Chromium Portable is a portable version of the Chromium web browser, packaged in the PortableApps.com Format, so you can run it from an iPod, USB flash drive, portable hard drive, CD or any other portable media. -
21
Zeal
Offline documentation browser inspired by Dash
Zeal is a simple offline documentation browser inspired by Dash. Get binary builds for Windows and Linux from the download page. After installing Zeal go to Tools ⟶ Docsets to browse and download docsets. You can limit search results to specific (or a set of specific) docsets. The docset filter and the search query are delimited by a colon character (:). If you prefer, you can start Zeal with a query from the command line. You can also search multiple docsets separating them with a comma. You can limit the search scope by using ':' to indicate the desired docsets. -
22
geckodriver
WebDriver for Firefox
geckodriver is an implementation of WebDriver, and WebDriver can be used for widely different purposes. How you invoke geckodriver largely depends on your use case. If you are using geckodriver through Selenium, you must ensure that you have version 3.11 or greater. Because geckodriver implements the W3C WebDriver standard and not the same Selenium wire protocol older drivers are using, you may experience incompatibilities and migration problems when making the switch from FirefoxDriver to geckodriver. Generally speaking, Selenium 3 enabled geckodriver as the default WebDriver implementation for Firefox. With the release of Firefox 47, FirefoxDriver had to be discontinued for its lack of support for the new multi-processing architecture in Gecko. Since geckodriver is a separate HTTP server that is a complete remote end implementation of WebDriver, it is possible to avoid using the Selenium remote server if you have no requirements to distribute processes across a matrix of systems. -
23
Waterfox
Privacy browser built for users who value customization & control
Waterfox is a free, open-source web browser and fork of Mozilla Firefox that’s built for users who prioritize privacy, performance, and customizability while still maintaining compatibility with modern web standards and extensions. It began as a 64-bit-focused fork and has grown into a full-featured browser available on Windows, macOS, Linux, and Android, making it a versatile alternative to mainstream browsers. Waterfox removes or disables much of Firefox’s telemetry and unnecessary data collection by default, giving users greater control over what is shared with third parties while still supporting classic and modern add-ons. The project emphasizes speed and efficiency through optimizations and choice, letting users tweak settings or install favored extensions without being locked into ecosystem constraints. Because it’s open source and actively developed by the community, new features, security updates, and performance improvements arrive regularly to align with web standards. -
24
Don't waste your time with compliance. Universal Bypass circumvents annoying link shorteners. Universal Bypass bypasses templates that are used on thousands of domains and it would be impossible for me to keep a complete list of domains that are bypassed. You would have to get a new Universal Bypass version and accept its new permissions for each new bypass. Custom Bypasses would be pretty pointless if you could only create them for sites that are already bypassed. Also known in the options as "Give and take the destinations of unbypassable shorteners.", this feature exists to bypass a respectable amount of link shorteners using CAPTCHAs and other forms of backend validation to make sure you've actually waited before you can proceed to the target link, to share this target with other Universal Bypass users, who come across the same link in the future, so they can proceed to the target immediately.
-
25
Chromium
The official GitHub mirror of the Chromium source
Chromium is the open‑source foundational web browser project that drives browsers like Google Chrome, Microsoft Edge, and Opera—built for speed, stability, security, and extendability across platforms. This directory is currently in a prototyping state and may be removed in the future. As we add support for multiple coding IDE/agents, we will likely pull common prompts and instructions into a central directory with stubs for bespoke IDE/agent integration. Please check with your organization before using GitHub Copilot. copilot-intructions.md is typically a single instruction file that contains default instructions for a workspace. These instructions are automatically included in every chat request.
