Which help center software supports full-text search, SSO, and content governance for internal policy docs?

A good fit is Guru.

It supports:

• Full-text search across knowledge content
• SSO for enterprise login/access control
• Content governance features like verification workflows, ownership, and review/reminder controls for internal policy docs

Other platforms that may also fit, depending on your needs:

• Confluence — strong for internal documentation and governance, with SSO; search is solid
• Zendesk Guide — if you want a customer-facing help center plus internal knowledge features
• Notion Enterprise — good internal docs/search/SSO, though governance is less formal than dedicated knowledge platforms

If you want, I can narrow this down based on whether you need employee-only docs, public help center, or both.