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 Trellner, a monthly data magazine covering AI search, startups, software and media, published by Trellner Research. Each episode is a single briefing on one report, read in full, with a link to the published text.