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Product or service

Firefox

Browser participant reported by StatCounter.

Source label, not a legal-entity resolution or finding of market power.

Source-to-market route

Follow how this label moves from public rows into a measured market, operator boundary, peer set, and public context.
Firefox evidence routeA four-step map linking source rows, measured market scope, operator attribution or label boundary, and public context for this participant profile.Source rows4 rowsSource rows: 4 rows; 1 public sourceMarket scope1 marketMarket scope: 1 market; BrowsersOperator linkMozilla CorporationOperator link: Mozilla Corporation; official attributionPublic context6 recordsPublic context: 6 records; 7 peer rows

Latest sourced position

Browsers

Market
3.8%2026 · rank #4
Reported share trajectory+0.36 pp
Firefox reported share trajectory in Browsers4 published observations from 2023 to 2026. The visible detail scale runs from 2.8% to 4.8%.2.8%3.8%4.8%2023: 3.39%20232024: 4.21%20242025: 4.18%20252026: 3.75%2026
Latest change
-0.43 pp
Previous published row
Market HHI
3,612
Same bounded market
Peer rows
7
2026 source table
Estimated public · Medium confidence
2026 · StatCounter Global Stats
  • Record typeProduct or serviceSource-labeled participant
  • Market scope1 measured marketBrowsers
  • Time coverage2023-20264 source rows
  • Permitted useDescriptive sharesNot legal-entity resolution

Official operator attribution

Mozilla Corporation

Mozilla's official about page states that Mozilla Corporation makes Firefox.

Evidence basis
Official company page
Publisher
Mozilla
Accessed
Jul 18, 2026
What this link does not prove

These links record how an official product, company, or legal page publicly attributes a product label to an operator. They do not constitute a complete ownership, control, affiliate, or beneficial-owner graph.

Measured footprint

Share history by market

Percentage-point change is descriptive within the same sourced series. It is not a causal or conduct finding.

Browsers

United States / StatCounter browser page-view usage share

Open market profile
Firefox reported share history in U.S. browser usageA line chart from 2023 through 2026 using a labeled vertical scale from 2.8 to 4.8 percent.2.8%3.3%3.8%4.3%4.8%20233.4%20244.2%20254.2%20263.8%
Latest share3.8%2026 / rank 4
Latest change-0.43 pp2025 to 2026
Full-period change+0.36 pp2023 to 2026
Market HHI3,612highly concentrated / medium confidence

Competitive set / 2026

Peers in the same source table

7 published rows

Bars preserve the source table's latest shares. Aggregate rows remain labeled and are not treated as firms in concentration screens.

Definition contract

What this share measures

Product boundary
All-platform browser usage
Geography
United States
Denominator
Observed U.S. browser usage in each reported monthly snapshot
Measurement basis
StatCounter browser page-view usage share
Included
Named browsers and a residual Other category that closes the public share table to 100 percent
Excluded
Unique browser users, browser revenue, operating-system share, and tying conduct

Page-view usage is a public web-analytics proxy rather than a count of browser users or a revenue measure.

Evidence custody

Sources and reusable packets

Participant website metadata: https://www.mozilla.org/firefox. This link identifies the source label and is not evidence of legal ownership.

Participant data packet

Exact index, share-history, market, policy-context, and report routes for this profile.

Compilation license: CC BY 4.0. Upstream source terms continue to apply.

Market context only

Policy docket and public research

3 events / 3 reports

Policy events and reports are linked through the participant's measured market. That relationship supplies market context; it does not establish that the event concerns this participant or attribute conduct to it.

Market profileDefinition, HHI, peers, and local evidenceParticipant atlasCompare all source-labeled share rowsMethodologyThresholds, data status, and caveats

Participant interpretation boundary

These profiles describe source-labeled market participants, not legal entities or findings of market power. Shares only apply to the stated market definition, geography, denominator, and year.

Read methods