Authentication for the Web.

Simple, unobtrusive authentication for Node.js.

The easiest, most secure way to use WireGuard and 2FA.

An authorization library that supports access control models like ACL, RBAC, ABAC in Golang: https://discord.gg/S5UjpzGZjN

The only web-scale, fully customizable OpenID Certified™ OpenID Connect and OAuth2 Provider in the world. Become an OpenID Connect and OAuth2 Provider over night. Written in Go, cloud native, headless, API-first. Available as a service on Ory Network and for self-hosters. Relied upon by OpenAI and others for web-scale security.

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

Self-Hosting Guide. Learn all about locally hosting (on premises & private web servers) and managing software applications by yourself or your organization. Including Cloud, LLMs, WireGuard, Automation, Home Assistant, and Networking.

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, Google Workspace, Active Directory and Kerberos

Authentication, simple and clean

The C++ REST SDK is a Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. This project aims to help C++ developers connect to and interact with services.

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

A spec compliant, secure by default PHP OAuth 2.0 Server

Laravel wrapper around OAuth 1 & OAuth 2 libraries.

Simple OAuth library for Java

Doorkeeper is an OAuth 2 provider for Ruby on Rails / Grape.

Open-source Auth0/Clerk alternative

A single API for all your integrations.

The ultimate Python library in building OAuth, OpenID Connect clients and servers. JWS,JWE,JWK,JWA,JWT included.

OAuth Proxy

Example showing how to use NextAuth.js with Next.js