Every category where a model named Firefox ESR for a mid-market B2B company. Share is first choices across the direct, paraphrase, budget and scale prompts; rank is within every product named in that category.

Category	Function	Share	Rank	Negative rate	Labels	Quadrant	Since September 2026
Enterprise browsers	Security operations	0%	76 of 80	70%	10	criticized challenger

Movement

This is the first edition on this tier, so no move can be computed for Firefox ESR yet. From the next edition this section shows, per buyer segment and per category, whether its share moved by more than the measured noise floor.

By model

How each model treated Firefox ESR across every prompt where it was named for a mid-market B2B company. Fourteen models, six prompts per category.

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Model	Alternative	Negative	Labels
Claude Haiku 4.5	0	0	0
GPT-5.4 mini	0	0	0
Gemini 3.5 Flash	1	1	2
Perplexity Sonar	0	1	1
Grok 4.1 Fast	1	1	2
Mistral Small	0	0	0
DeepSeek V4 Flash	0	0	0
Llama 4 Maverick	0	0	0
Qwen 3.7 Flash	0	1	1
Kimi K2	0	1	1
GLM 4.7 FlashX	0	0	0
MiniMax M2.5	0	1	1
GPT-6 Luna	0	0	0
Muse Glimmer 30B	1	1	2

By framing

Which of the six questions produced the naming. By model says how often; this says asked what. The first-choice count on the right carries the marks of the models that produced it.

FramingLabels by classFirst choices

Direct1 labelNone

Paraphrase1 labelNone

Comparative3 labelsNone

Budget-constrained8 labelsNone

Scale-constrained0 labelsNone

Negative18 labelsNone

First choiceAlternativeMentionNegative31 labels in all, every segment counted; 0 of the 0 first choices count toward share, since the comparative and negative framings do not. The bar is one segment per label class, to scale within the framing.

What the models said for it

Verbatim evidence the judge attached to positive labels.

“Mozilla Firefox for Enterprise: Free, strong support quality, group policies, and open-source flexibility” Grok 4.1 Fast · Enterprise browsers · budget prompt · alternative

“Firefox delivers secure, resilient and privacy-focused browsing at scale with enterprise policies” Muse Glimmer 30B · Enterprise browsers · comparative prompt · alternative

“Completely open-source, customizable via GPO, and blocks external telemetry.” Gemini 3.5 Flash · Enterprise browsers · budget prompt · alternative

And against it

Verbatim evidence attached to negative labels. A warning on a product with few labels is a warning; on a product with many, it is one voice among them.

“Browsers like Brave, DuckDuckGo, Firefox, Tor, and Opera were designed primarily for individual privacy, not organizational security” MiniMax M2.5 · Enterprise browsers · negative prompt · hard negative

“Brave, Firefox, Tor - Optimized for consumer privacy (tracker blocking, anti-fingerprinting), not enterprise security needs” Qwen 3.7 Flash · Enterprise browsers · negative prompt · hard negative

“standard consumer browsers like Safari, Firefox, or unmanaged Chrome ... Why you should avoid them” Gemini 3.5 Flash · Enterprise browsers · negative prompt · hard negative

“It lacks the built-in cloud management console of Chrome/Edge and requires more manual configuration, which is why it is less frequently recommended” Muse Glimmer 30B · Enterprise browsers · budget prompt · soft negative

Named alongside

The products named in the same answers as Firefox ESR, over the 31 answers that named it. Took the first choice instead counts the answers where the other product was the first choice and Firefox ESR was named but was not.

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ProductSame answerTook the first choice insteadHead to head

Google Password Manager26 of 3110Not among the top eight

Island Enterprise Browser21 of 313Not among the top eight

Brave19 of 310Not among the top eight

Microsoft Edge for Business13 of 314Not among the top eight

Apple Passwords10 of 310Not among the top eight

Tor10 of 310Not among the top eight

Opera9 of 310Not among the top eight

Microsoft Edge Password Manager7 of 311Not among the top eight

Edge for Business7 of 310Not among the top eight

DuckDuckGo6 of 310Not among the top eight

A head-to-head page exists where both products are among a category's top eight. The other rows are the same fact without a page behind them, so they link to the product instead.

What carried it into the answer

The sites and pages cited by the answers that named Firefox ESR. A fact about retrieval, not a lever on the model.

Citations exist only for the models that return a source list, five of the fourteen in this edition, so these counts come from 31 of the 31 answers that named Firefox ESR and are not a share of its labels.

Domains cited

expertinsights.com19

venn.com19

island.io15

chromeenterprise.google14

csoonline.com14

gbhackers.com12

cybersecuritynews.com10

gartner.com10

paloaltonetworks.com10

skyhighsecurity.com9

132 of the 132 domain citations in answers naming Firefox ESR came from somebody else's page.

Pages cited

csoonline.com/article/573875/secure-web-browsers-for-the-enterprise-compared-how-to-pick-t14

expertinsights.com/web-security/best-secure-browsers-for-smbs12

gbhackers.com/best-enterprise-browsers-compared12

island.io/article/top-secure-browsers-enterprise12

expertinsights.com/web-security/the-top-enterprise-browsers11

chromeenterprise.google/solutions/secure-browsing8

cybersecuritynews.com/best-enterprise-browsers8

fortinet.com/resources/cyberglossary/browser-security8

Pages are listed as the models cited them.

Search and answers

firefox.com is not in Google's top ten for any of the category's searches. In the answers, Firefox ESR takes 0% of first choices and Google Password Manager takes 26%.

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In search

Google, US estimates

Position for “enterprise browsers”

–

not in the top ten

Position for “secure enterprise browser”

–

not in the top ten

Searches for its name, Google: 3,600 a month (“firefox esr”)
AI search demand for its name, est.: 273 a month
Organic visits to its site: about 1,183,043 a month
Searches its site ranks for: 13,038 · 4,446 in the top three
Sites linking to it: 118,450
Paid Google search: No ads found in the estimate; that does not mean it runs none

Ads on GoogleDetailLess

120+ ads · 92 video, 28 text · 62 shown in the last 30 days

First shown September 2025, as Mozilla Corporation, verified. Ads started 2025-11 to 2026-10: 117 in the year, 3 before.

On Google's pages: 1 2 3 4

In answers

This edition

Share of first choices

rank 76 of 80 in enterprise browsers

Segment leader

26%

Google Password Manager

First choices: 0 across its categories
Named in: 31 answers
Its own site cited: in 31 of the answers that named it

Search figures are US estimates from DataForSEO, read October 5, 2026; AI search demand is its modeled, directional estimate, not a count of queries to any assistant. The answers are this edition's. Two measurements side by side: neither is read as the cause of the other.

What it publishes

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Addresses on firefox.com

4,483

subdomains included

Content

counted in the table below

Documentation

Product · Integration

91 · 0

Kind	Pages	Last 90 days
News or press	44	undated
Glossary or explainer	14	undated
Comparison	12	undated
Report or ebook	4	undated
Template or tool	1	undated

How it is countedHide how it is counted

Every page firefox.com exposes, subdomains included. Kind is read from the address and title. The last 90 days, the latest date and the twelve months count pages by when they were published, from the site's feeds, a date in the address, or the page's own publication date, read from up to a hundred of its most recently changed pages; a page that says only when it last changed is counted in its kind but not in when, so the recent counts are a floor, and a kind none of whose pages gives a publication date reads undated. Read September 29, 2026.

Names read as Firefox ESR

What the judge wrote, as written, with how often. The vendor table decides that these count as Firefox ESR; a claim can dispute any of them.

Firefox 7Firefox Enterprise 1Mozilla Firefox / Firefox ESR 1

Follow Firefox ESR

An email the morning each edition publishes: where this product moved, where it held, and by how much against the noise floor. One address, confirmed by a click; a stop link in every email.

Already following? Everything you follow, with a stop for each.

Is this your product?

Claim this page

Claiming is free and changes nothing in the data. A claimed page shows a verified contact who is told when each edition publishes and when Firefox ESR's standing changes by more than the noise floor; the right to propose corrections to the vendor table, meaning names the judge wrote that should or should not read as Firefox ESR, applied by version and listed in the change log; and a one-line description supplied by the vendor and marked as such.

What a new claim receivesHide what a new claim receives

A new claim receives the current edition's vendor brief for Firefox ESR by email, built from the raw record of the edition. It shows:

where Firefox ESR is named, by buyer and by framing, and which cells hold its first choices;
the claims the models make when they name it, ranked, with the strongest and the weakest quoted;
its vocabulary against the segment leader's, and the pages the models cited;
who was chosen in the answers that did not name Firefox ESR, and every reason the record gives;
a battlecard for each top rival: the head-to-head split, why they win, and the reservation quoted against them;
one page of published figures cleared to show a buyer.