Logto: Open-Source Auth Infrastructure for SaaS and AI Apps

Summary

Logto is a modern, open-source authentication and authorization infrastructure designed for SaaS and AI applications. Built on OIDC and OAuth 2.1, it offers robust features like multi-tenancy, enterprise SSO, and RBAC. This platform simplifies secure identity management, providing pre-built sign-in flows and SDKs for various frameworks.

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Introduction

Logto is a cutting-edge, open-source authentication and authorization infrastructure tailored for modern SaaS and AI applications. It simplifies the complexities of OIDC and OAuth 2.1, enabling developers to build secure, production-ready authentication systems with ease. Key features include multi-tenancy, enterprise Single Sign-On (SSO), and Role-Based Access Control (RBAC), making it an ideal solution for scalable platforms. Learn more at the Logto Official Website.

Installation

Getting started with Logto is straightforward, offering multiple deployment options. For the quickest setup, you can use Logto Cloud, a fully managed service with zero setup.

Alternatively, you can launch Logto OSS in seconds using GitPod:

gitpod.io/#https://github.com/logto-io/demo

For local development, Logto supports Docker Compose or Node.js:

# Using Docker Compose (requires Docker Desktop)
curl -fsSL https://raw.githubusercontent.com/logto-io/logto/HEAD/docker-compose.yml | \
docker compose -p logto -f - up

# Using Node.js (requires PostgreSQL)
npm init @logto

For a comprehensive guide, refer to the full OSS installation documentation.

Examples

Logto provides extensive support for integrating authentication across various applications and services. It offers SDKs for over 30 frameworks, including React, Next.js, Angular, Vue, Flutter, Go, and Python, ensuring flexible integration for SPAs, web apps, mobile apps, and APIs.

The platform also features developer-first SDKs with clear guides, user-friendly authentication flows covering sign-up, sign-in, social login, Google One Tap, MFA, and SSO. Furthermore, Logto excels in multi-tenancy and organization management, offering organization RBAC, member invites, and just-in-time provisioning.

Why Use Logto

Logto stands out as a robust solution for teams scaling SaaS, AI, and agent-based platforms, eliminating common authentication challenges. By choosing Logto, you benefit from:

Comprehensive Features: Ready-to-use multi-tenancy, enterprise SSO, and RBAC without complex workarounds.
Developer-Friendly: Pre-built sign-in flows, customizable UIs, and SDKs for a wide array of frameworks.
Protocol Compliance: Full support for OIDC, OAuth 2.1, and SAML, abstracting away protocol complexities.
AI Readiness: Works out-of-the-box for Model Context Protocol and agent-based AI architectures.

It's an open-source alternative that provides a modern, flexible, and secure foundation for your application's identity needs.