Identity GitHub Repositories (2026) · Open Source Tools

Kanidm: A simple, secure, and fast identity management platform

Communication for AI agents: stable identity, durable mail and chat, and wake-up events across sessions, runtimes, machines, and organizations. MIT, self-hostable.

ThunderID, an LF Decentralized Trust project, is a high-performance, open-source identity stack designed for developers to secure and manage access for humans, AI agents, and machines through fully composable identity flows.

winapp, the Windows App Development CLI, is a single command-line interface for managing Windows SDKs, packaging, generating app identity, manifests, certificates, and using build tools with any app framework.

Open source Auth0/Keycloak alternative. Passkeys, SSO, MFA, passwordless, biometric login. Self-hosted or cloud. Enterprise-ready for SaaS & mobile apps

Highflame ZeroID: Autonomous Agent Identity Management System (AAIMS)

Drop-in auth endpoints for ASP.NET Core: JWT, cookies, email codes and 2FA for your SPA or API, built on ASP.NET Core Identity.

Pomerium is an identity and context-aware access proxy.

ZITADEL - Identity infrastructure, simplified for you.

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

Reference implementation of OpenPubkey

Attestix - Attestation Infrastructure for AI Agents. DID-based agent identity, W3C Verifiable Credentials, EU AI Act compliance layer, delegation chains, and reputation scoring. 47 MCP tools across 9 modules.

Dynamic Role-Based Access Control for ASP.NET Core MVC, Web API and Razor Pages.

Welcome to the WSO2 Identity Server source code! For info on working with the WSO2 Identity Server repository and contributing code, click the link below.

Microsoft Authentication Library (MSAL) for iOS and macOS

Microsoft Authentication Library (MSAL) for Android

FusionDirectory is a modern, efficient and secure Identity Management (IAM) solution.

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

Manage https://goauthentik.io with terraform.

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