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Home/Categories/Security & Monitoring/Logto
icon of Logto

Logto

Open source alternative to Auth0, Okta and WorkOS

An open-source auth infrastructure designed for developers, offering features like multi-tenancy, enterprise SSO, and RBAC for SaaS and AI apps.

12K starsTypeScriptMPL-2.0Active this month
Visit websiteGitHub repo
image of Logto
Contents
  1. 01Who Logto is for
  2. 02The problem it solves
  3. 03How it solves it
  4. 04Strengths and trade-offs
  5. 05Tech stack
  6. 06FAQ
  7. 07Similar open-source tools
TL;DR

Logto is a customer identity and access management platform for SaaS teams that need sign-in, organizations, and developer-friendly auth without Auth0 lock-in. It replaces hosted identity platforms when teams want MPL-2.0 source access, self-hosting, and modern OIDC/OAuth flows.MPL-2.0 · TypeScript · 12K stars · Active this month

who it's for

Who Logto is for#

B2B SaaS teams building customer auth

Logto fits teams that need organizations, app sign-in, and standards-based auth without starting from scratch.

Skip if:

Skip it if your main need is employee device management and workforce identity governance.

Teams reducing Auth0 dependency

Self-hosting and source access give teams a path away from per-user hosted identity lock-in.

Skip if:

Use a managed provider if your team cannot operate authentication infrastructure safely.

the problem

The problem it solves#

Authentication starts as a login box, then quickly becomes organizations, roles, social sign-in, machine-to-machine access, audit needs, and pricing tied to active users. Hosted identity platforms are strong, but they can become expensive and hard to leave once every app depends on them.

SaaS teams need standards-based auth that developers can reason about, with a deployment path that does not force all customer identity data into one vendor account.

how Logto solves it

How it solves it#

OIDC and OAuth foundation

Logto builds on standard identity protocols, which helps teams integrate web apps, APIs, and third-party clients without inventing custom auth.

Organizations and multi-tenancy

Logto supports organization-oriented customer identity patterns, making it relevant for B2B SaaS rather than only consumer login.

Cloud and self-hosted options

Teams can use the hosted product or run Logto themselves, giving a migration path as security, cost, or data-boundary needs change.

strengths · trade-offs

Strengths and trade-offs#

Strengths

  • Developer-centered CIAMLogto focuses on product authentication flows that SaaS developers need, including sign-in, tenants, and app integration, rather than only workforce identity.
  • MPL-2.0 source accessThe MPL-2.0 license provides a clearer open-source base than fully closed identity providers while still allowing commercial use under license terms.

Trade-offs

  • -Auth operations are sensitiveSelf-hosting identity means your team owns patches, secrets, uptime, backups, and incident response for login infrastructure.
  • -May not replace workforce IAMLogto is a strong customer identity fit. Companies looking for deep workforce identity governance may still need Okta or a dedicated IAM suite.
tech stack · detected from GitHub

What it's built on#

Languages
TypeScript
Frameworks
React
Databases
PostgreSQL
frequently asked

FAQ#

Is Logto self-hosted?

Yes. Logto supports self-hosting and also offers a hosted cloud product.

What license does Logto use?

Logto is MPL-2.0 licensed.

Is Logto an Auth0 alternative?

Yes, especially for SaaS teams that need customer identity features and want an open-source deployment path.

also worth a look

Similar open-source tools#

Better Auth

Better Auth

Drop-in TypeScript auth with MFA, SSO, and multi-tenancy support

28.3KTypeScriptMIT
ZITADEL

ZITADEL

Open source identity platform with SSO, RBAC, and multi-tenancy

13.8KGoAGPL-3.0
Warrant

Warrant

Add RBAC, ABAC, and ReBAC to any app via API and SDK

17GoMIT
Oso Cloud

Oso Cloud

Open source authorization with RBAC, ABAC, and ReBAC for any app

3.5KRustApache-2.0
hysteria

hysteria

Fast and censorship-resistant proxy solution

21.2KGoMIT
Local Deep Research

Local Deep Research

Your AI research assistant, fully local and encrypted.

7.5KPythonMIT

Repository

Stars
12K
Forks
802
License
MPL-2.0
Latest
v1.39.0
Last commit
26 days ago
Last verified
May 13, 2026
Repo
logto-io/logto ↗

Additional details

Language
TypeScript
Open issues
205
Contributors
92
First release
2021

Categories

Security & MonitoringDeveloper ToolsAPIs & Integration

Tags

AuthenticationAuthorizationAPI InfrastructureDeveloper ToolsOpen CoreSelf HostedCybersecurityBaaS