The Best OTP Auth Alternatives in 2026

Generate two-factor authentication codes in Chrome, Firefox, or Edge with the Authenticator extension.

Store, generate, and organize one-time password codes with 2FAuth, a self-hosted manager for individuals and teams.

Find which websites support two-factor authentication and what methods they offer in this directory.

Build authentication into applications with Better Auth, an authentication framework.

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.

Kali NetHunter App Store provides an installable catalog of applications for the Kali NetHunter platform.

Cyberthreat Real-Time Map displays a map and statistics about cyber attacks using data from listed sources.

Online Color Picker lets users select colors and view values such as RGB, HSL, and hexadecimal codes.

Use Metasploit to find security issues, verify mitigations, and manage authorized penetration testing assessments.

Manage two-step verification tokens on Android with Aegis Authenticator, a free, open-source app.

Snyk helps software teams identify and manage security risks in code and dependencies while building AI-enabled applications.

Manage Windows Firewall rules and receive outbound connection notifications with Windows Firewall Control.

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.

Manage GnuPG keys from a terminal with gpg-tui, a text-based key management interface.

Manage Android firewall rules with AFWall+, an iptables-based firewall app.

Generate secure SSL configurations for selected web, database, and mail software.

Solve reverse engineering challenges published on challenges.re, a challenge-focused site.

GoPlus offers Web3 security tools including audits, APIs, a user security hub, and a browser extension.

Search the National Vulnerability Database, a public resource for vulnerability information.

View Toronto Police calls for service on a map that updates in real time, according to the supplied page description.

Add proof-of-work verification to websites with mCaptcha, a privacy-focused automated CAPTCHA system.

WhatsMyDNS checks DNS record propagation across global resolvers for record types including A, AAAA, MX, and TXT.

The Snyk Security Database provides vulnerability details and remediation guidance for packages and cloud configurations.