Simple, unobtrusive authentication for Node.js.

Authentication for the Web.

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

OpenID Certified™ OpenID Connect and OAuth Provider written in Go - cloud native, security-first, open source API security for your infrastructure. SDKs for any language. Works with Hardware Security Modules. Compatible with MITREid.

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

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

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.

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

A spec compliant, secure by default PHP OAuth 2.0 Server

🧑‍🚀 Logto is a modern Auth0 alternative for building identity infrastructure with minimal effort, for both your customers and their organizations.

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

Simple OAuth library for Java

Laravel wrapper around OAuth 1 & OAuth 2 libraries.

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

OAuth Proxy

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

Easy integration with OAuth 2.0 service providers.

Token based authentication for Rails JSON APIs. Designed to work with jToker and ng-token-auth.

Open-source product integrations: Easily integrate you app with any external API

Laravel Passport provides OAuth2 server support to Laravel.