Zen Browser

Zen Browser

Updated Mar 15, 2026
Awarded
1efficiency points
by editors.

Embedded AI, User Experience, Tab Management, Performance Efficiency, and Data Protection

Zen Browser
Zen Browser screenshot
FTC
Review
Comparison15

Review Summary

Review Summary

Zen Browser is an attempt at coping some of what makes Arc Browser great (like the sidebar), but is built atop Firefox. While some people love the idea of getting away from Google and Chromium, the reality is in that your extensions won't work, and generally sites build to support Chromium browsers, so you might experience a more buggy experience and worse developer tooling across the board.

Zen Browser Alternatives

Zen Browser Alternatives

Not sure if Zen Browser is the right fit for you? Check out these alternatives:

  1. ChatGPT Atlas
    ChatGPT Atlas

    Best AI Browser for ChatGPT users

    Best AI Browser for ChatGPT users

What is Zen Browser?

What is Zen Browser?

Zen Browser is heavily inspired by Arc Browser, with one core difference. It was built for those who want a Chromium alternative, but love the idea of a modern browser with a powerful sidebar, like Arc.

That said, with it being built atop Firefox, if you're moving over to it from Google Chrome or Safari, you're most notably going to notice how many browser extensions you use that don't exist in Firefox more than anything:

Embedded Image

Only 2 of 29 extensions ported over

It's also built by a much smaller team, so you really have to just be somebody that absolutely loves Firefox, and wants to use a modern spin on that. That said, if you want an Arc-like experience without the bugs? Just use Arc instead.

Final Verdict

Final Verdict

Zen Browser sits in a weird in-between space where it's more polished than Firefox, but less capable than Arc or Brave. So when it's compared to highly adopted Chromium-based browsers like Arc, Chrome, or even Vivaldi, Zen is lacking in all of the core areas.

If privacy is your main driver over everything, and you like Arc's general UI, Zen is an interesting side project, but it still feels like a nascent and half-baked browser, probably a couple years away from feeling the the stability that Arc currently has. Most people are better off with Brave for privacy or Arc for user-experience.

Categories

Categories

Zen Browser fits into multiple categories based on what it actually helps you do. Each category highlights a different strength and the efficiency points it earned, helping you compare tools not just by features, but by how well they actually perform.

BrowserMain

Keep exploring the best software across categories, or explore Zen Browser alternatives

FAQ

FAQ

Is Zen Browser Built Atop Chromium?

Is Zen Browser Built Atop Chromium?

No, Zen Browser is built atop Firefox, not Chromium.