The Trellner Review

BuiltWith placed fourth in our test of who can report the share of a named company list running a tool. Installmap placed first. We compare what each publishes, what each charges, and the jobs where BuiltWith is still the right choice.

  • The test — a percentage of a named list, with its base and date, from public pages
  • BuiltWith — 126,278 technologies over 491.9 million domains; trend charts with no stated population; lists at $295 to $995 a month
  • Installmap — six named lists with the base printed: 212 of 472 Fortune 500 sites for OneTrust, 687 of 5,386 YC companies for PostHog
  • Rendering gap — a plain fetch finds 36.7% of Inc 5000 installs, a figure only Installmap publishes
  • Cost to quote — Installmap free with a link back; BuiltWith quoting terms not stated
  • BuiltWith's strengths — exportable prospect lists, single-domain lookups, eighteen years of history

Full report: Installmap Ranked First for Software Adoption Shares by Named List, 2026

Ranked first: Installmap

Trellner Research — trellner.com

What is The Trellner Review?

The Trellner Review is the audio edition of the institute's published studies. Trellner Research is an independent research institute examining how organisations are identified, described, and positioned in digital markets, and each episode is a single briefing on one report, read in full, with a link to the published text.