- Free tier: unlimited logins for 7,000 active users/month, authentication with email/password and up to 2 social providers
- Pros: lots of providers, great documentation, support passwordless authentication, UI provided, compatible with iOS Touch ID, offers welcome emails and tasks triggers
- Limitations: active users are users who logged in the last 30 days
- Free tier: 50,000 active users/month (active means at least one activity during a calendar month)
- Pros: supports mobile and web apps, multiple authentication providers (Facebook, Twitter, Google, …)
- Limitations: Cognito Sync (users data synchornization) is only included in the AWS 1 year free tier in the limit of 10GB storage and 1,000,000 sync operations/month
- Free tier: always free, unlimited users
- Pros: offers multiple login providers for free (anonymous, email, Google, Facebook, Twitter, GitHub), provide welcome emails triggers, integrates well with Firebase database security rules, libraries for multiple platform, UI available for Android, iOS and web.
- Free tier: always free, unlimited users
- Pros: offers multiple login providers (email, custom with in-app browser, Google, Facebook, Twitter, GitHub, Instagram, LinkedIn), provide forms
- Free tier: 1 Web or Mobile App, Standard Login, 3 Social Providers, Managed Auth Page, 5000 Monthly Active Users
- Pros: Complete Authentication with Managed Login Page, full customization of the login page and prebuilt themes available, self-serve dashboard and documentation, transactional emails & template customization, SDKs of popular programming languages, and demos.
- Limitations: active users are users who logged in the last 30 days.
- Free tier: Up to 7,000 monthly active users, Up to 10 custom apps, OAuth 2.0 & OpenID Connect.
- Pros: Complete authentication, authorization and user management through their API, client libraries for multiple languages.
- Free tier: 10 mobile apps and 500 active users while in preview
- Pros: offers multiple login providers (Azure Active Directory, Microsoft Account, Facebook, Google, Twitter), client libraries for iOS, Android, Cordova, Windows, Xamarin.Android, Xamarin.iOS, Xamarin.Forms), UI support