| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 3 |
| Spec score · Multi-Factor Authentication Software | 8.1 (#11) | 7.6 (#31) |
| Authentication | It supports passkeys, one-time passwords, mobile push notifications, and WebAuthn as authentication methods. | The maker states that the software is OATH TOTP and HOTP certified. |
| Deployment | The documented deployment methods are Docker, Kubernetes, and bare metal. | The product is offered as an on-premise standalone appliance with no cloud connection. |
| Purpose | Authelia is an open-source authentication and authorization server and portal providing multi-factor authentication and single sign-on for applications. | multiOTP is RADIUS-based and can be used for VPN authentication, SSL-VPN connections, and extranet portals. |
| Support | The project asks users to consult its documentation and provides contact options for security vulnerability reports. | Pro includes mail support and firmware updates for the current major version; Enterprise renewal is needed for new firmware updates and mail support. |
