285+ open-source auth tools — OAuth, SSO, passkeys, MFA, and session management. Alternatives to Auth0, Clerk, and Firebase Auth.
The Developer Platform for Modern APIs
ALTCHA offers cutting-edge spam and abuse protection for websites and apps, with privacy-friendly CAPTCHA alternatives designed for GDPR compliance.
Privacy-focused proof-of-work CAPTCHA system that silently protects websites without tracking users or requiring image solving. Drop-in replacement for reCAPTCHA.
React starter kit with "Most Wanted" application features
Replace your VPN with zero-trust access built on WireGuard. Fast, scalable network security with simple policies and identity provider integration.
A spec compliant, secure by default PHP OAuth 2.0 Server
A reverse proxy that provides authentication with Google, Azure, OpenID Connect and many more identi
The tiniest authentication and authorization server you have ever seen.
OpenID Connect (OIDC) identity and OAuth 2.0 provider with pluggable connectors
Kanidm: A simple, secure, and fast identity management platform
An JWT based API for managing users and issuing JWT tokens.
Enable Opencode to authenticate against Antigravity (Google's IDE) via OAuth so you can use Antigrav