Source code for 2FAS iOS app

2FAS server-side API

One Time Password (HOTP/TOTP) library for Node.js, Deno, Bun and browsers.

TOTP library for Go

The Single Sign-On Multi-Factor portal for web apps

支持国密SM2/SM3/SM4/SM9/SSL的密码工具箱

An open-source UI-first Identity and Access Management (IAM) / Single-Sign-On (SSO) platform with web UI supporting OAuth 2.0, OIDC, SAML, CAS, LDAP, SCIM, WebAuthn, TOTP, MFA, Face ID, RADIUS, Goo…

The authentication glue you need.

ZITADEL - Identity infrastructure, simplified for you.

The Complete Authentication and User Management Solution for the Passkey Era. Open Source Alternative to Clerk, Auth0, et al.

Light LDAP implementation

Frontier is an all-in-one user management platform that provides identity, access and billing management to help organizations secure their systems and data. (Open source alternative to Clerk)

An open-source authorization as a service inspired by Google Zanzibar, designed to build and manage fine-grained and scalable authorization systems for any application.

ShangMi (SM) cipher suites for Go (Go语言商用密码软件)