zitadel / zitadel

Open-source identity and access management platform providing SSO, MFA, passkeys, OIDC, SAML, and SCIM with multi-tenancy.

firebase / firebase-ios-sdk

Source for Firebase's open-source Apple platform libraries, covering auth, Firestore, messaging, storage, and more for iOS and macOS apps.

google / GoogleSignIn-iOS

Official SDK for adding Google account sign-in to native iOS and macOS apps.