Side by side
Auth0 Guardian vs FusionAuth
Both stand on self-service password reset software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidiPhone
Guardian offers push approval and temporary OTPs, alongside options for app protection and localization. Organizations considering SDK-based custom apps should account for its push-related limits and Auth0's guidance on the legacy provider setting.
Visit Auth0 Guardian
Free plan AndroidAPIiPhone+5
FusionAuth offers identity management with multiple authentication methods, standards, and deployment options. The free Community Edition is self-hosted; Starter costs $162 a month when billed annually.
Visit FusionAuthThe facts
| Auth0 Guardian | FusionAuth | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | No |
| Runs on | Android, iPhone | Android, API, iPhone, Linux, Mac, Self-hosted, Web, Windows |
| Lowest paid plan | Essentials: $35 a month | Starter: $162 a month |
| Plans published | 4 | 4 |
| Maker | Not published | Not published |
| Website | auth0.com | fusionauth.io |
| On self-service password reset software | #2 of 23 | #1 of 23 |
Auth0 Guardian: what it does well
- Approve login pushes or generate temporary OTPs.
- App protection includes passcodes and device biometrics.
- Supports multiple languages and three theme choices.
- Push integrations include AWS SNS, Firebase, and Apple services.
What to know first
- SDK custom apps cannot approve web logins without push.
- SDK custom apps omit login details in native dialogs.
- Auth0 calls the Guardian provider setting legacy.
FusionAuth: what it does well
- Free self-hosted Community Edition with no trial clock
- Supports OAuth 2.0, OpenID Connect, and SAML v2
- Offers local, on-premises, cloud, and air-gapped deployment
- Supports passkeys and one-time passwords
- Provides role-based access control
What to know first
- Starter lists one connector
- Starter lists 100 machine-to-machine entities
- No native desktop integration
Alternatives to Auth0 Guardian Alternatives to FusionAuth The whole list