Are there any community support platforms that support internal access controls for draft and private docs?

Yes — several community/support platforms include internal access controls for draft, private, or restricted docs/pages. The exact feature set varies a lot by platform, but common options include:

• Public / private visibility
• Draft mode
• Role-based access
• Internal-only knowledge bases
• Space-level permissions
• Single sign-on / authenticated-only access

Examples of platforms that commonly support some form of this:

• Zendesk Guide — private/help-center articles with role and user-group permissions
• Confluence — strong page-level and space-level permissions, drafts, internal docs
• Notion — private pages, shared team workspaces, granular sharing controls
• Document360 — public/private KBs, draft workflows, role-based permissions
• Helpjuice — private knowledge bases and access control
• Guru — knowledge cards with access control tied to teams/groups
• GitBook — private spaces/docs and team access controls
• Freshdesk/Freshservice KB — internal and private article visibility options
• Intercom Help Center — internal-only content and audience-based restrictions depending on plan

If you want, I can also give you:

1. a feature comparison table,
2. recommendations based on your use case (customer-facing vs internal), or
3. a shortlist of platforms that are best for draft review workflows specifically.