Logto is an open-source, developer-first authentication and authorization infrastructure for building secure SaaS and AI apps with ease.

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🚀 Overview

Logto is a modern, open-source identity platform that simplifies authentication and authorization for developers. It provides everything needed for secure sign-in experiences, including OIDC/OAuth 2.1 compliance, multi-tenancy, SSO, and RBAC, without the hassle of building from scratch.

What problem does this project solve? Authentication is notoriously complex and time-consuming—Logto abstracts away the pain of protocols, SDK integrations, and scaling auth for growing apps.

Who is it built for? Developers, startups, scaleups, and enterprises creating web, mobile, API, B2B SaaS, or AI applications.

Why did you build it? To deliver a delightful, customizable auth solution that's fast to integrate and scales effortlessly, so devs can focus on what matters.

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✨ Key Features

• Multi-tenancy & RBAC: Built-in organization management, role-based access, and just-in-time provisioning for SaaS growth.
• Universal SDKs: Pre-built SDKs for 30+ frameworks like React, Next.js, Vue, Flutter, Go, Python—seamless integration.
• Flexible Auth Flows: Passwordless (email/SMS), social logins (Google, GitHub), MFA (Passkeys, TOTP), and enterprise SSO (SAML, Okta).
• Developer Tools: Clean Management API, customizable UIs, and support for AI agents/MCP.
• Optional: Ongoing AI architecture enhancements and more connectors.

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🛠 Tech Stack

• Frontend: Vite, TypeScript, SCSS (Console UI)
• Backend: Node.js, TypeScript (Koa-based server)
• Database: PostgreSQL
• Auth: Custom OIDC/OAuth 2.1, SAML compliant
• Hosting: Docker Compose, Render, Self-hosted, Cloud.logto.io

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👥 Who Is This For?

This project is useful for:

• Developers who want to add secure, modern auth in minutes
• Teams looking for scalable identity for SaaS and B2B apps
• Indie makers building AI agents or multi-tenant products

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📸 Screenshots / Demo

• Live demo: https://cloud.logto.io
• GitHub: https://github.com/logto-io/logto

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🔥 Project Status

• 🟢 Actively building

Last updated: 2026-03-24

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❓ FAQ

Is this project free?

Freemium: 50K monthly active users free on cloud; pay-as-you-go beyond; fully free for self-hosting forever. Open Source. (Explain briefly.)

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Is the source code available?

Yes — https://github.com/logto-io/logto

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Can I contribute?

Yes! Follow CONTRIBUTING.md for guidelines. Open issues/PRs on GitHub, join Discord community, or share feedback.

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📬 Contact & Links

• Website: https://logto.io
• GitHub: https://github.com/logto-io/logto
• Twitter/X: https://x.com/logto_io
• Discord: https://discord.gg/vRvwuwgpVX

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