Amazon Cognito
Customer identity and access management service for adding user sign-up, sign-in, and authentication to apps
Open-Source Projects
Discover top open-source software, updated regularly with real-world adoption signals.
Discover top open-source software, updated regularly with real-world adoption signals.
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.
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.
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.
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.
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.
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
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.
Yes. Logto can be self-hosted using Docker Compose or Node.js with a PostgreSQL database. Full installation guides are available in the documentation.
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.
Logto offers organization-based multi-tenancy with per-organization RBAC, member invitations, just-in-time provisioning, and isolated SSO configurations for each tenant.
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
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