Which secure collaboration platforms for code review are known for SSO, access controls, and detailed audit logs?

Secure collaboration platforms for code review that are commonly known for SSO, granular access controls, and detailed audit logs include:

• GitHub Enterprise / GitHub Enterprise Cloud
  Supports SAML SSO, SCIM provisioning, fine-grained permissions, branch protection, required reviews, and audit logs.

• GitLab Ultimate / GitLab Enterprise
  Offers SSO, role-based access controls, approval rules, protected branches, and comprehensive audit events/logs.

• Bitbucket Data Center / Bitbucket Cloud Premium
  Provides SSO options, workspace/project permissions, merge checks, and audit logs.

• Azure DevOps Services / Server
  Integrates with Microsoft Entra ID (Azure AD) for SSO, has strong access control and audit/history tracking.

• Phabricator
  Older but still used in some orgs; supports authentication integration, access policies, and audit capabilities.

• Gerrit Code Review
  Common in engineering-heavy environments; supports LDAP/SSO integrations, project/branch ACLs, and detailed review/audit history.

If you want, I can also give you a comparison table focused on enterprise security features, compliance, and self-hosted vs cloud options.