Logto

Logto is modern auth infrastructure that adds multi-tenancy, enterprise SSO, and RBAC to SaaS and AI apps with OIDC and OAuth 2.1.

Introduction

Logto is authentication and authorization infrastructure for SaaS and AI apps, built on open standards like OIDC and OAuth 2.1.

Multi-tenancy, enterprise SSO and RBAC: Everything you need to sell to enterprises.
Customizable sign-in experience: Plus advanced flows and security controls.
20+ framework SDKs: Works out of the box, with a clean Management API.
Scales with you: From proof of concept to multi-app structures.
Open source: Self-host it, or use Logto Cloud.

Perfect for: Developers who don't want to rebuild auth for every product.