Side by side
Casdoor vs Frontegg
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 AndroidAPIExtension+6
Visit Casdoor 
Free plan AndroidAPIiPhone+1
Frontegg combines customer sign-in, authorization, and B2B tenant controls with developer SDKs and an embedded admin portal. Its free plan has stated usage and connection allowances; built-in email has customization and sending limits.
Visit FronteggThe facts
| Casdoor | Frontegg | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Android, API, Extension, iPhone, Linux, Mac, Self-hosted, Web, Windows | Android, API, iPhone, Web |
| Lowest paid plan | Not published | Free or on request |
| Plans published | None | 2 |
| Maker | Not published | Not published |
| Website | casdoor.ai | frontegg.com |
| On oauth server software | #17 of 32 | #13 of 32 |
Casdoor: what it does well
Frontegg: what it does well
- Free plan includes 7,500 monthly active users
- Supports SSO, passkeys, and MFA
- Embedded self-service identity and account portal
- SDKs cover web frameworks and mobile step-up authentication
What to know first
- Only one external email provider can be configured at a time
- Built-in email is limited to 100 sends daily
- Built-in email templates and subject lines cannot be customized
Alternatives to Casdoor Alternatives to Frontegg The whole list