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Modern auth infrastructure for developers

Logto adds multi-tenancy, enterprise SSO, and RBAC to your SaaS or AI apps. All with OIDC and OAuth 2.1 made simple, fast, and developer-friendly.

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Protocols that work

OAuth 2.1, OIDC, SAML. Auth, SSO, RBAC.

Any app, anywhere

From local to cloud. From web to mobile. From one app to many.

No billing surprises

50K MAUs free. Token-based. Pay-as-you-go.

Built for devs

Open-source. Fast integration. Developer-first support.

Millions of identities. Proven reliability.

Trusted by public companies, fast-growing startups, and government agencies.

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For builders who hate rebuilding auth

Tired of duct-taping auth across your SaaS, AI agents, and B2B apps? Logto got you covered.

Sign-in experience

Email and SMS passwordless

Passwordless that feels obvious: one-time codes via email or SMS.

Social sign-in

Social sign-in, done. Google, Apple, Discord, and more.

Password authentication

Still the default. Still what users expect.

Multi-app omni sign-in experience

One sign-in flow. Every app. Looks native. Works everywhere. Zero friction.

Security and control

Multi-factor authentication

MFA in minutes. Passkeys, authenticator apps, backup codes.

Role-based access control

Set rules, control access. RBAC for global and organization-level resources.

Enterprise SSO

SSO with Okta, Entra, SAML, any IdP. Enterprise SSO without the enterprise headache.

Advanced flows

Multi-tenancy (organizations)

Multi-tenancy that scales. Group users, manage resources, permission everything.

IdP for 3rd-party

Your app. Your ecosystem. Be the IdP with a consent flow that doesn’t suck.

Machine-to-machine authentication

M2M made simple. APIs, microservices, devices, all locked down.

Machine-to-machine authentication

Impersonation

Troubleshoot like a hero. Safely impersonate users, fix issues fast.

Impersonation

Personal access token (PAT)

PATs for scripts, bots, and pipelines. No messy sign-ins, just clean access.

Personal access token (PAT)

Works out of the box with 20+ frameworks and clean Management API

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Plugged into the tools you already use
Check out all frameworks
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Grow and scale without security debt

Integrate Logto

Add Logto. Up and running in minutes.

Idea and proof of concept

Build fast. Test faster. Validate your idea with Logto.

A single app

Secure your app. Focus on shipping, not auth.

Multi-app structure

Handle multiple apps. Manage everything, scale cleanly.

Sell to enterprises

Ready for enterprise. SSO, compliance, and support baked in.

Secure identities at every stage of your product

  • Any stage
  • Any model
  • Any stack

Launching your first app? Expanding to multi-product? Selling to enterprise? Logto handles auth and SSO. No matter where you are.

Built for trust. Audited for security.

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Standards & Privacy Compliant

Logto is SOC 2 Type II certified: proof we take security, uptime, and data privacy seriously.

  • Open-source
  • Self-hosting ready
  • Role-Level Security
  • Argon2 password hashing
  • High availability
Protection
  • Community-driven
  • Data protection
  • TLS everywhere
  • Data isolation
  • Database encryption

Logto Cloud runs in EU 🇪🇺, Australia 🇦🇺, US 🇺🇸, and Japan 🇯🇵 regions. With DevSecOps, advanced encryption, and rock-solid data isolation.

See how we keep you safe

Devs talk. They love Logto.

  • Avatar

    Ufuk ARSLAN

    Co-Founder of Mobilist

    Logto has helped us to include authentication fast and easily. If you are looking for an authentication layer this is the solution.
  • Avatar

    André König

    CEO at openformation.io

    We have been using Logto as THE authentication system and it has truly been a game changer. The integration was seamless and it significantly improved user experience.
  • Avatar

    Michel Courtine

    Member of Technical Staff at Docker

    Amazing product. True Auth0 killer with nothing shy of it. Open source and free on premise forever with a stunning admin UI. What's not to like? Already central to the stack of my next product launch.
  • Avatar

    Alexander De Ridder

    Co-founder at INK

    Logto Cloud is an incredible solution for startups and scaleups who need authentication. It was easy to get up and running and since it supports OAuth, integration into our other systems was seamless. Highly recommended!
  • Avatar

    Olyno

    Developer

    The UI is great, the docs is good too, the design is modern enough, a great product with a great future. And the team is super helpful and present.
  • Avatar

    ZR3SYSTEMS

    Developer

    The team have helped me so much with my auth system. With the core being Logto, I only need to implement other verifications around it. Logto IS AMAZING and I see the commitment of the team!
  • Avatar

    Z3rNico

    Developer

    If you quickly need to add auth to your app be sure to check out @logto_io. It's easy to use and modern, has a great team behind it and it's even open source! #logto
  • Avatar

    Murat Gozel

    Developer

    For those who look for an auth system, I would recommend give Logto a try. I switched to its beta version after using a kind of traditional auth system for about ten years.
  • Avatar

    xiaohanyu

    Developer

    But before adding more features I decided to migrate the current user auth system, which is powered by @nextauthjs , to a new one that has better support for SSO integration with ease. Checked several solutions, @logto_io looks quite promising! Hopefully I can get this done soon.
  • Avatar

    Onur Köse

    Backend Developer

    I am migration the authentication system from Firebase to Logto. The docker environment helps a lot and it's really a out-of-the-box solution for my needs. I am going to experiment how can I integrate its RBAC module into my Symfony application but I don't expect any issues because everything was so smooth so far.
  • Avatar

    John Needle

    Senior Software Engineer

    I'm never building auth from scratch again
  • Avatar

    Hussaini Maina

    Developer

    if you're building a saas and your authn is not built with something like @logto_io, then you're definitely wasting precious developer time on authn. Your time should be spent on business logic not auth. Try out logto, it takes less than 1hr to setup & understand.

Build with Logto Cloud. Focus on your app.

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