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The most comprehensive authentication framework

🧑‍🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.

Composio powers 1000+ toolkits, tool search, context management, authentication, and a sandboxed workbench to help you build AI agents that turn intent into action.

A self-hosted UPI & COD payment gateway with zero per-transaction platform fees, universal JavaScript checkout integration, dynamic QR payments, WhatsApp OTP authentication, and automated payment verification.

The authentication glue you need.

Daemon to ban hosts that cause multiple authentication errors

A reverse proxy that provides authentication with Google, Azure, OpenID Connect and many more identity providers.

go-admin is a Gin + Vue starter kit for admin applications, supporting Element UI, Arco Design, and Ant Design. Features include multi-tenancy, user management, JWT authentication, RBAC, code generation, a form builder, and scheduled tasks. Build your own admin app in just 3 minutes.

Enterprise-grade Shopify Admin API authentication adapter — OAuth 2.0 Client Credentials Grant with automatic token refresh.

A filled with self-loathing implementation of Basic Authentication, and Certificate Authentication to make me feel like a real security person, all for for ASP.NET Core

OpenAM is an open-source access management solution for identity authentication, authorization, and federation. It provides single sign-on, adaptive authentication, and centralized policy control, enabling secure access to web, mobile, and cloud applications

S3 Reverse Proxy with GET, PUT and DELETE methods and authentication (OpenID Connect and Basic Auth)

A Model Context Protocol (MCP) server that provides authenticated access to Google Workspace APIs, offering integrated Authentication, Gmail, Calendar, and Drive functionality

Flutter plugin to store data behind biometric authentication (ie. fingerprint)

Example cookie-based authentication with Gin

A simple but full-featured web server, supports HTTP/1, HTTP/2, MVC, API, Authentication, Authorization...

Identity and Access Management server, manage authentication, authorization and access control up to decentralized identity

Apache Shiro is a powerful and easy-to-use Java security framework that performs authentication, authorization, cryptography, and session management

An SMTP Client writen in C++ for Qt. Allows applications to send emails (MIME with text, html, attachments, inline files, etc.) via SMTP. Supports SSL and SMTP authentication.

flask integration for peewee, including admin, authentication, rest api and more

LDAP authentication module for nginx

Security engine for Java (authentication, authorization, multi frameworks): OpenID Connect, SAML2, CAS, OAuth, LDAP, JWT...

SAML 2.0 authentication with Passport

Google's officially supported Node.js client library for accessing Google APIs. Support for authorization and authentication with OAuth 2.0, API Keys and JWT (Service Tokens) is included.

The best authentication plugin for the Bukkit/Spigot API!

A library for implementing authentication/authorization in Ember.js applications.

Free Elasticsearch security plugin and Kibana security plugin: super-easy Kibana multi-tenancy, Encryption, Authentication, Authorization, Auditing

Create and load persistent GitHub authentication tokens for command-line apps

🔑 Provides authentication, authorization and a role-based access control management via ACL (Access Control List)

Two-Factor Authentication for WordPress.