Flow Browser is a free, GPL-3.0-licensed desktop web browser built on Electron and Chromium, written in TypeScript, that runs Chrome extensions from the Chrome Web Store and is aimed at people who want a minimal, privacy-focused alternative to mainstream browsers.

What it is

Flow Browser is a modern, tabbed web browser that combines the Chromium engine with a clean, minimal interface. The source lives at MultiboxLabs/flow-browser and is distributed under the GNU General Public License v3.0, with the project homepage at flow-browser.com. Much of the shell is based on electron-browser-shell by Sam Maddock, extended with additional features, and the interface design takes inspiration from Arc Browser and Zen Browser. The stated goal is a lightweight, feature-rich browser that is a versatile alternative to mainstream browsers, and it sits in the Electron and Chromium desktop ecosystem rather than in the browser-engine space.

The concrete problem it solves is organization on the desktop. Mainstream browsers give little separation between contexts such as work and personal browsing, and they let tab sprawl grow unchecked. Flow Browser addresses this with Profiles, which keep separate settings and extension sets, and Spaces, which group tabs into distinct areas. A sidebar provides quick access to bookmarks, history and settings, tabs persist between restarts, and tabs can be put to sleep to save resources. A native adblocker blocks ads and trackers, and Widevine support allows DRM-protected content to play. In short, it replaces a mainstream Chromium browser for users who want Chrome Web Store extension compatibility without giving up organizational controls.

Key capabilities

• Profiles keep multiple configurations, each with its own settings and extensions.
• Spaces organize tabs into separate areas, and tabs persist between restarts.
• Command Palette searches the web or opens a new tab, bookmark, or history entry.
• Chrome extensions install from the Chrome Web Store.
• Native adblocker blocks ads and trackers, and sleep tabs reduce resource use.
• Sidebar provides quick access to bookmarks, history and settings.
• Offline games are available at the internal flow://games page.
• Security behavior asks before opening external applications, and Widevine handles DRM content.

Who uses it and how

• Individual desktop users who separate work and personal browsing through Profiles and Spaces.
• Chrome Web Store extension users who need extension compatibility in a Chromium-based browser.
• Builders and contributors, since the topic list carries contributions-welcome and help-wanted, with guidance in CONTRIBUTING.md.
• Developers working in the project's stack of Bun, Vite, React, Electron and TypeScript, with documentation surfaced through DeepWiki and pull requests reviewed by CodeRabbit.
• Users streaming DRM-protected media, which the Widevine support covers.

Getting started

Download the file for the target platform from GitHub Releases at github.com/MultiboxLabs/flow-browser/releases. The project homepage is flow-browser.com.

How it compares

The facts name no paid products that this project replaces, so no licence, hosting or pricing contrast is possible. Among similar tools, Flow Browser builds on electron-browser-shell and takes design inspiration from Arc Browser and Zen Browser, positioning itself as a GPL-3.0, Chromium- and Electron-based option with Chrome extension support rather than a proprietary or non-Chromium alternative.

When to use it — and when not to

Pick it for tab organization, profiles and extension compatibility in a browser that is free and openly licensed. Wait if the workflow depends on features still listed as upcoming, because Downloads and Favourites are not shipped yet, and Reorder Tabs, Topbar, Pinned Tabs, Custom Search Engines and Preview Tabs are also only planned. The repository carries 59 open issues, so treat it as an actively evolving project and verify it against daily-driver needs before committing.