# How many companies use Salesforce

Salesforce detections from DNS (SPF records) and company homepages, by company list, Inc 5000 size band and industry, and Y Combinator batch year and status. Installmap, October 2026.

- `by_group_spf.csv`: domains resolved, domains whose SPF record includes `_spf.salesforce.com`, and the share, for all six lists.
- `by_group_products.csv`: each Salesforce product separately and any Salesforce product, for the four lists crawled in full (Inc 5000, unicorns, Fortune 500, Y Combinator).
- `inc5000_by_employees.csv`, `inc5000_by_industry.csv`: Inc 5000 2026 cuts (SPF measure).
- `yc_by_batch_year.csv`, `yc_by_status.csv`: Y Combinator cuts (SPF measure).

Post: https://installmap.com/research/how-many-companies-use-salesforce