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Research

Method notes and dataset writeups from the Installmap crawl.

• How we count 2026-09-04. What the four group crawls fetched, what the denominators are, and what a homepage cannot show.
• Half of the Inc 5000's llms.txt files were written by a plugin, not the company 2026-09-04. 48.3% of the 1,815 llms.txt files we found on Inc 5000 domains name the software that produced them, and the two biggest names are Yoast SEO at 17.8% and Shopify at 17.4%.
• Vercel is on 27% of YC homepages and 3.4% of the Fortune 500 2026-09-04. Vercel is on 27.3% of YC homepages and 3.4% of Fortune 500 homepages, and Adobe Experience Manager reverses those two numbers almost exactly.
• Vercel hosts 51% of the newest YC batches, up from 8% in 2012-17 2026-09-04. Vercel is on 50.8% of the YC companies in the 2025 and 2026 batches and on 8.2% of the companies in the 2012 to 2017 batches.