Generate two-factor authentication codes in Chrome, Firefox, or Edge with the Authenticator extension.
2FA Directory vs OTP Auth
How do 2FA Directory and OTP Auth compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | 2FA Directory | OTP Auth |
|---|---|---|
| What it is | Find which websites support two-factor authentication and what methods they offer in this directory. | Manage two-factor authentication codes with OTP Auth, an iOS app listed on the App Store. |
| Website | ||
| Type | Website | Website |
| Topic | ||
| Pricing | Not confirmed | Freemium |
| Platforms | Web | iOS, Web |
| Open source | Not stated | Not stated |
| Language | English | English |
| Alternatives |
Other options to consider
Sites similar to both 2FA Directory and OTP Auth.
Build authentication into applications with Better Auth, an authentication framework.
Facia provides deepfake and liveness detection for identity verification and authentication.
This WebAuthn guide explains an authentication API intended to replace passwords with stronger authentication.
Generate secure SSL configurations for selected web, database, and mail software.
Lucia was deprecated in March 2025. The website was updated in July 2026 and points to code/auth_session.ts as a single-file replacement for the NPM package and to the Auth Book for auth information.





