# WordPress market share

WordPress and other CMS detections on company homepages, by company list, Inc 5000 industry and size band, and Y Combinator batch year. Installmap, November 2026.

- `by_group.csv`: sites crawled, sites on WordPress, WordPress's share of sites and of sites running any detected CMS, and the four most common CMS per list.
- `cms_by_group.csv`: every detected CMS and page builder with its site count, per list.
- `inc5000_by_industry.csv`, `inc5000_by_employees.csv`: Inc 5000 2026 cuts.
- `yc_by_year.csv`: WordPress, Webflow and Framer homepages per YC batch year.
- `inc5000_wordpress_companies.csv`: the 2,606 Inc 5000 companies with a WordPress homepage and the page builder each loads.

Post: https://installmap.com/research/wordpress-market-share