Side by side
Apereo CAS vs Authgear
Both stand on oauth server software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APILinuxSelf-hosted+2
Visit Apereo CAS 
Free plan Open source AndroidAPIiPhone+2
Authgear covers sign-in, user management, and SSO, with SDKs, APIs, and self-hosting support. The Free plan has defined limits on applications, seats, and log retention; Developers starts at $50 a month.
Visit AuthgearThe facts
| Apereo CAS | Authgear | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Yes |
| Runs on | API, Linux, Self-hosted, Web, Windows | Android, API, iPhone, Self-hosted, Web |
| Lowest paid plan | Free or on request | Developers: $50 a month |
| Plans published | 1 | 4 |
| Maker | Not published | Not published |
| Website | apereo.github.io | authgear.com |
| On oauth server software | #5 of 32 | #1 of 32 |
Apereo CAS: what it does well
Authgear: what it does well
- Supports passkeys, biometrics, and multi-factor authentication.
- Offers SSO, including SAML for web apps.
- SDKs cover major listed web and mobile frameworks.
- Supports self-hosting and OIDC-compliant provider changes.
- Free plan includes unlimited MAUs.
What to know first
- Free plan allows two applications.
- Free plan allows two admin seats.
- Free plan has one-day log retention.
- Developers plan costs $50 a month.
Alternatives to Apereo CAS Alternatives to Authgear The whole list