Data infrastructure / open access
Public data catalog
Download the records behind the research, including market shares, concentration measures, official events, and source references. Coverage and missing values are documented for each dataset.
Source records move through market definitions, concentration calculations, confidence labels, and public data endpoints — 45 source records, 12 market profiles, 235808 record rows plus a 1 row summary endpoint across 62 API endpoints.
Record rows
235,808
Sources
45
Endpoints
62
Aug 15, 2026
Latest source review
62
Dataset families
4
Source types
Market-definition atlas
What market is this metric measuring?
Inspect each product boundary, geography, denominator, proxy choice, and permitted comparison use before treating concentration values as economic evidence.
Selected definition contract
U.S. browser usage
Product boundary
All-platform browser usage
Geographic boundary
United States
Measurement basis
StatCounter browser page-view usage share
Denominator
Observed U.S. browser usage in each reported monthly snapshot
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
Method and limitations
Compute HHI from the same StatCounter all-platform U.S. browser usage-share series and retain the residual Other category.
Page-view usage is a public web-analytics proxy rather than a count of browser users or a revenue measure.
Boundary source
Browser market share in United States of America, April 2023-April 2026
StatCounter Global Stats · accessed 2026-07-17
Open data needs public interpretation.
The API is a starting point, not a legal conclusion. Pair downloads with methodology notes, source records, and the data-gaps report when citing market concentration.