
FusionAuth
8.3#1 in authentication softwareFrom $162 a monthFree planAndroidiOSWebAPI
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| Fact | FusionAuth | OpenIddict |
|---|---|---|
| Authentication | It supports username/password login, identity providers, passkeys, and one-time passwords. | OpenIddict focuses on OAuth 2.0/OpenID Connect protocol handling and leaves user authentication to the implementer; ASP.NET Core Identity is optional. |
| Customization | Pages and messages can be customized, while lambdas alter validation, MFA challenge and token transformation behavior and webhooks react to events. | Its event handlers can be removed, reordered, or replaced with custom handlers. |
| Integrations | Identity-provider integrations include Apple, Facebook, Google, Twitter and arbitrary OIDC or SAML v2 providers, with connectors, plugins and monitoring integrations also available. | OpenIddict lists ASP.NET Core, ASP.NET, Entity Framework, MongoDB, and Quartz.NET among its integration areas. |
FusionAuth suits teams managing end-user identity that want deployment choices from self-hosting to managed cloud. It is not positioned as a desktop integration or Active Directory replacement.
You want what its maker publishes above — check its page for the details.