SquareX vs Zscaler vs Legba: Which Browser Isolation Makes Sense After the Acquisition

For almost three years, picking between SquareX and a Chrome-native alternative was a consumer-versus-consumer comparison. Both products installed from the Chrome Web Store. Both priced themselves at consumer-friendly levels. Both were bought the same way. The decision was mostly about architecture preference and latency tolerance.

After February 5, 2026, the comparison moved. SquareX is now part of Zscaler, and the public Chrome Web Store listing is no longer a live self-serve path. What used to be a two-way choice between two browser extensions is now a choice between an enterprise platform, a former SquareX workflow people still search for, and the independent extensions that are still on the Chrome Web Store.

This post is the honest version of that comparison. We built Legba, so the bias is on the table. What we will not do is pretend Legba fits every SquareX user. Some of those users genuinely need the enterprise platform. We will say so out loud and point them in the right direction.

The 30 Second Positioning

Side by Side: Zscaler, SquareX, Legba

The table below is intentionally long. Browser isolation comparisons often gloss over how buyers are supposed to buy the thing, which matters more than most people admit. A product that is great on paper but invisible to your procurement team will not land.

Where Zscaler Is the Right Answer

We want to be direct about this section because it is the one section that makes the rest of the post credible. Zscaler is genuinely the right choice for a specific kind of buyer. The conditions where that is true look like this.

• You already run a consolidated security platform. Your CISO has picked a primary vendor and the rest of your tooling funnels through that vendor's edge. Adding a separate Chrome extension creates organizational seams. Zscaler consolidates more of the stack in one place.
• Your threat model requires a fully separate browser instance per session. Cloud-rendered browsers are a stricter isolation boundary than edge-based isolation. If your compliance team wrote the requirement as a fully isolated browser process per session, the former SquareX architecture now inside Zscaler is the direct heir to that approach.
• You have procurement, legal, and enterprise support expectations. Regulated industries often need dedicated account managers, signed DPAs, redlines, and an enterprise support SLA. That is the table stakes for Zscaler. It is not the table stakes for a $10 Chrome extension.
• You are standardizing on SWG, ZPA, and ZIA. If you are already buying the rest of the Zscaler platform, the browser isolation layer arriving in the same platform is a genuinely good deal. The integration work is already done for you.

If any of that describes your procurement reality, stop reading here and book a call with Zscaler. We mean that literally. Buying the wrong tool costs more than buying the right one.

The Middle Column: Why SquareX Is Not Really a Choice Now

We kept SquareX in the comparison because people still search for it and because the product was meaningful inside the disposable-browser category for three years. As an active choice, though, it is no longer really a choice in the way it used to be. The public Chrome Web Store listing is not currently usable for fresh installs, and the public messaging now points buyers toward Zscaler's platform.

The more useful frame is that SquareX now matters as a reference point, not as a normal self-serve product listing. When someone says "I want something like SquareX," there are two accurate answers in 2026. If they want to follow the Zscaler enterprise direction, they should evaluate Zscaler directly. If they want the Chrome-extension shape of it, they should evaluate Legba or another independent extension.

For the full timeline on how SquareX arrived at this moment, read What Happened to SquareX.

Where Legba Is the Right Answer

With the two enterprise shapes defined, Legba's position is the obvious one to describe. Legba is what you pick when you want the Chrome-extension shape of browser isolation and you do not want to buy an enterprise platform to get it.

• Individuals. One person, one browser, one $10 a month charge. No IT deployment, no admin policy, no identity integration. Install, toggle Ghost Mode, close the tab when done. This is the shape most former SquareX consumers wanted in the first place.
• Small teams without a platform buy. Five to fifty people, no dedicated CISO, a lead who cares about security. Self-serve install across the team beats spending a quarter on a platform procurement.
• MSPs and security operators. Legba's MSP tier is built specifically for managed rollouts across many clients. Multi-tenant dashboard, bulk provisioning, per-client policy, and aggregate analytics. SquareX did not ship a dedicated MSP product. Zscaler is set up for MSSP partnerships but the minimum viable deal is much larger.
• AI-heavy workflows. Legba treats AI prompt traffic as a first-class isolation surface. Prompts, uploads, and outputs stay inside the ephemeral session. If your reason for isolating the browser is to control what leaves your machine during ChatGPT, Claude, Copilot, or similar use, Legba is built for that.
• OpenClaw operators. If you run autonomous coding agents, Legba's OpenClaw sandbox at /openclaw is the extension-native answer to running those agents in isolation. This is not a product category that enterprise-only platforms target well.

The Pricing Contrast, Said Plainly

Every procurement conversation eventually becomes a pricing conversation. Here is the honest comparison.

This pricing gap is not a gotcha. Zscaler is a bigger, more integrated product and it is priced accordingly. Legba is deliberately scoped to the browser and priced for individuals and small teams. Picking the wrong one for your context is the expensive mistake, not the sticker price itself.

A Simple Decision Framework

Picking the right one is usually a three-question exercise.

1. Do you have a procurement team that will buy an enterprise platform? If yes, and the rest of your security stack is already consolidated under one vendor, go look at Zscaler. If no, keep going.
2. Are you an MSP or a team rolling out to many end users? If yes, Legba's MSP tier is the right shape. If no, keep going.
3. Do you want isolation inside your existing Chrome workflow for $10 a month? If yes, install Legba. That is the whole decision.

The thing this framework is designed to prevent is a common 2026 buyer mistake. Some former SquareX users are assuming the acquisition means the only next step is an enterprise platform conversation. If your needs were always individual-user shaped, do not let procurement scope grow around you. Pick the right product for the shape of your usage.

The Honest Bottom Line

The acquisition changed the market. It did not kill browser isolation as a category. The consumer and small-team end of the market lost one vendor and kept several others. The enterprise end of the market gained a new capability inside a platform most of those buyers already use.

If you are a former SquareX user deciding what to do next, the choice is simpler than the acquisition headline makes it sound. Zscaler if you are going enterprise. Legba if you are staying in Chrome. The middle column of the comparison table is no longer a live option.

For the migration path, read SquareX to Legba: A Step by Step Migration Guide. For the side-by-side feature map and the first-month-free offer, the SquareX alternatives page has everything on one page.