Authentication is required in almost every app. Any app that requires a user to login needs an authentication service. These authentication services are also called as Authentication SAAS (Software as a service)
Let’s look at 8 free authentication services that you can use in your next app.
1. Warrant
- Application Authorization and Access Control
- SDKs and drop-in components to add authorization at every layer of the tech stack
- Multiple server-side and client-side SDKs supported
2. GetOTP
- Multi-channel OTP verification API
- Drop-in UI component for the login flow
- Customize the branding and theme of the drop-in component
3. Micro User Service
- Developer friendly
- Not entirely free but fairly cheap
- Support magic link
4. Stytch
- Single sign-on (SSO)
- Passwordless authentication
- Magic links
- OTPs
- Biometrics
- Account deduplication
- Fraud & bot detection
5. Auth0
- Bot detection
- Guest login
- Single sign-on (SSO)
- Social integration
- Multi-factor authentication
- Multiple integrations
- Multiple SDKs
6. Firebase Authentication
Last but not least, Firebase authentication is quite popular and used by many developers. Although Firebase authentication lacks many features, it is still pretty good and the free tier is good enough for small to medium-scale projects.
Conclusion
Hope this list of authentication services is useful to quickly setup authentication/authorization to secure your next project 🪪
