Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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otplib
TypeScript-first TOTP and HOTP library with a pluggable crypto/base32 architecture for Node, Bun, Deno, and browsers.
OTPAuth
HOTP and TOTP one-time password library for Node.js, Deno, Bun, and browsers
pyparsing
Build recursive-descent parsers in Python without a separate grammar file
nom
A byte-oriented, zero-copy parser combinators library for Rust
speakeasy
A Node.js library for generating and verifying RFC 4226 (HOTP) and RFC 6238 (TOTP) one-time passcodes for two-factor authentication.
Google2FA
A framework-agnostic PHP implementation of HOTP and TOTP one-time passwords, compatible with Google Authenticator and similar apps.
django-allauth
Integrated Django app for authentication, registration, and social login
Laragear TwoFactor
On-premises TOTP two-factor authentication for Laravel users
PragmaRX Recovery
Generates two-factor auth recovery/backup codes with configurable count, format, and casing.
scheb/2fa-bundle
A generic interface to add two-factor authentication to Symfony applications.
scheb/2fa-backup-code
Backup code support for Symfony two-factor authentication via scheb/2fa-bundle.
django-two-factor-auth
Complete two-factor authentication for Django, adding TOTP, SMS/call, email, WebAuthn, and YubiKey verification on top of django-otp.
webauthn
Small, lightweight PHP WebAuthn (FIDO2/Passkey) server library for passwordless login.
scheb/2fa-trusted-device
Trusted-device support for scheb/2fa-bundle, letting users skip repeat two-factor prompts on remembered devices
scheb/2fa-email
Email-based two-factor authentication provider for scheb/2fa-bundle in Symfony