Amazon Cognito
Customer identity and access management service for adding user sign-up, sign-in, and authentication to apps
Logto
Modern auth infrastructure for SaaS and AI apps
Open-source authentication and authorization platform built on OIDC and OAuth 2.1, delivering multi-tenancy, enterprise SSO, and RBAC without protocol complexity.
Overview
Authentication infrastructure built for modern SaaS and AI
Logto is an open-source authentication and authorization platform designed for teams building scalable SaaS, AI agents, and multi-tenant applications. It abstracts the complexity of OIDC, OAuth 2.1, and SAML, delivering production-ready auth with enterprise features out of the box.
Developer experience meets enterprise capabilities
With SDKs for 30+ frameworks—including React, Next.js, Vue, Flutter, Go, and Python—Logto integrates into any stack in minutes. Pre-built sign-in flows, customizable UIs, and support for social providers (Google, Facebook, Azure AD, Okta) eliminate weeks of implementation work. The platform natively supports multi-tenancy with organization-level RBAC, member invitations, and just-in-time provisioning.
Purpose-built for AI and agent architectures
Logto offers first-class support for the Model Context Protocol and agent-based systems, making it ideal for teams building AI-powered applications that require secure, scalable identity management. Deploy via Logto Cloud for fully managed hosting or self-host using Docker Compose or Node.js with PostgreSQL. Licensed under MPL-2.0, Logto balances open-source flexibility with commercial viability.
Highlights
Multi-tenancy with organization RBAC, SSO, and just-in-time provisioning
SDKs for 30+ frameworks with pre-built, customizable sign-in flows
Full OIDC, OAuth 2.1, and SAML support without protocol complexity
Native Model Context Protocol support for AI agents and architectures
Pros
- Comprehensive enterprise features (multi-tenancy, SSO, RBAC) included by default
- Extensive SDK coverage across web, mobile, and backend frameworks
- Managed cloud option and flexible self-hosting with Docker or Node.js
- Purpose-built support for AI agents and Model Context Protocol
Considerations
- MPL-2.0 license requires disclosure of modifications to Logto source files
- Self-hosted deployments require PostgreSQL database management
- Enterprise features may introduce complexity for simple use cases
- Smaller community compared to established auth providers
Managed products teams compare with
When teams consider Logto, these hosted platforms usually appear on the same shortlist.
Looking for a hosted option? These are the services engineering teams benchmark against before choosing open source.
Fit guide
Great for
- SaaS platforms requiring multi-tenancy and organization-level access control
- AI applications and agent-based systems needing secure identity management
- Teams seeking enterprise SSO and RBAC without vendor lock-in
- Developers wanting protocol-compliant auth without OIDC/OAuth complexity
Not ideal when
- Projects requiring only basic username/password authentication
- Teams unable to manage PostgreSQL or container infrastructure
- Organizations mandating permissive licenses like MIT or Apache 2.0
- Applications needing auth solutions with decades of production hardening
How teams use it
Multi-tenant B2B SaaS authentication
Deploy organization-based access control with SSO, RBAC, and member provisioning in days instead of months
AI agent identity and authorization
Secure agent-to-service communication using Model Context Protocol with standards-based token management
Enterprise SSO integration
Connect customer identity providers via SAML or OIDC without building custom federation logic
Unified auth across web, mobile, and APIs
Implement consistent authentication flows across React SPAs, Flutter apps, and backend services using framework-specific SDKs
Tech snapshot
TypeScript97%
SCSS2%
JavaScript1%
HTML1%
PLpgSQL1%
MDX1%
Frequently asked questions
What protocols does Logto support?
Logto fully supports OIDC (OpenID Connect), OAuth 2.1, and SAML for both inbound and outbound federation, enabling integration with any standards-compliant identity provider or application.
Can I self-host Logto?
Yes. Logto can be self-hosted using Docker Compose or Node.js with a PostgreSQL database. Full installation guides are available in the documentation.
What is the Model Context Protocol support?
Logto provides native authentication and authorization for AI agents and systems built on the Model Context Protocol, enabling secure identity management for agent-based architectures.
How does multi-tenancy work in Logto?
Logto offers organization-based multi-tenancy with per-organization RBAC, member invitations, just-in-time provisioning, and isolated SSO configurations for each tenant.
What frameworks have official SDKs?
Logto provides SDKs for 30+ frameworks including React, Next.js, Angular, Vue, Flutter, Swift, Kotlin, Go, Python, and more, covering web, mobile, and backend environments.
Project at a glance
Active- Stars
- 11,458
- Watchers
- 11,458
- Forks
- 689
LicenseMPL-2.0
Repo age4 years old
Last commit13 hours ago
Self-hostingSupported
Primary languageTypeScript
Last synced 12 hours ago