Store, generate, and organize one-time password codes with 2FAuth, a self-hosted manager for individuals and teams.
Cap vs OTP Auth
How do Cap and OTP Auth compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | Cap | OTP Auth |
|---|---|---|
| What it is | Cap provides a self-hosted, open source alternative to CAPTCHA challenges for websites. | 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 Cap and OTP Auth.
Find which websites support two-factor authentication and what methods they offer in this directory.
Add proof-of-work verification to websites with mCaptcha, a privacy-focused automated CAPTCHA system.
Solve reverse engineering challenges published on challenges.re, a challenge-focused site.
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.
Use Metasploit to find security issues, verify mitigations, and manage authorized penetration testing assessments.







