Duende IdentityServer
7.0#15 in oauth server softwareFrom $5,750 a yearAndroidiOSWebAPI
VisitDuende IdentityServer vs FusionAuth
FusionAuth
8.3#1 in authentication softwareFrom $162 a monthFree planAndroidiOSWebAPI
VisitWhat both publish
| Fact | Duende IdentityServer | FusionAuth |
|---|---|---|
| Customization | The framework is designed to be extended and customized, including authentication flows and business logic. | Pages and messages can be customized, while lambdas alter validation, MFA challenge and token transformation behavior and webhooks react to events. |
Duende IdentityServer plans
- Lite$5,750 a year
- Standard$12,500 a year
- Advanced$24,900 a year
- Custom—
FusionAuth plans
- CommunityFree
- Starter$162 a month
- Enterprise$2,970 a month
- Essentials$2,970 a month
Pick Duende IdentityServer if…
You want what its maker publishes above — check its page for the details.
Pick FusionAuth if…
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.