Authentication middleware

5 reusable Authentication middleware libraries across every platform — libraries, SDKs, and drop-in systems. You should never have to know which ecosystem it lives in.

• @react-native-firebase/app

  by GitHub Actions · Free · npm

  A well tested, feature rich Firebase implementation for React Native, supporting iOS & Android. Individual module support for Admob, Analytics, Auth, Crash Reporting, Cloud Firestore, Database, Dynamic Links, Functions, Messaging (FCM), Remote Config, Sto

  AuthenticationCloud   ReactAndroidiOS

• @react-native-firebase/app

  by GitHub Actions · Free · npm

  A well tested, feature rich Firebase implementation for React Native, supporting iOS & Android. Individual module support for Admob, Analytics, Auth, Crash Reporting, Cloud Firestore, Database, Dynamic Links, Functions, Messaging (FCM), Remote Config, Sto

  AuthenticationCloud   ReactAndroidiOS

• Auth0

  by Okta · Free tier + paid · Commercial · middleware

  Identity platform: authentication, SSO, and authorization as a service via SDKs and APIs.

  AuthenticationAuthorization   WebNode.jsReactAndroidiOS

• nudgy

  by highstepping-chaperon781 · Free · github

  Get native macOS notifications for AI coding agents like Claude Code, so you can track work from the menu bar

  AIAuthenticationNotifications   iOS

• perspective-cuts

  by joannvicennial286 · Free · github

  Write Apple Shortcuts using a text-based language and compiler instead of drag-and-drop actions.

  AuthenticationCloudAutomationDatabase   iOS