A community-maintained list of vendors that charge extra for SSO (single sign-on). The live site is at sso.tax.
Each vendor is a YAML file in _vendors/. Jekyll builds the site and deploys to GitHub Pages on every push to main. Vendors are sorted into two tables: The List (vendors with published SSO pricing, sorted by markup percentage) and The Other List (vendors that require contacting sales).
Know a vendor that charges extra for SSO? Add a YAML file and open a PR — a validation bot will check your submission automatically. See CONTRIBUTING.md for the full guide and YAML template.
See DEVELOPMENT.md for repo architecture, testing workflows, and branch conventions.
Apache 2.0 — see LICENSE.