SecurityBitwarden
Open-source password manager — unlimited free vault on every device, AES-256 encryption, audited annually.
Logto is a fast-growing open-source identity platform that bundles OIDC, OAuth 2.1, multi-tenancy, RBAC and enterprise SSO into a single MPL-2.0 codebase. Free up to 50,000 monthly active users and self-hostable, it is the most credible 2026 alternative to Auth0, Clerk and AWS Cognito for modern SaaS and AI apps.
Logto is an open-source identity platform that bundles OIDC, OAuth 2.1, enterprise SSO, multi-tenancy and RBAC into a single MPL-2.0 codebase you can either self-host for free or run on Logto Cloud. We rate it 88/100 — the most credible 2026 alternative to Auth0, Clerk and AWS Cognito if you are building a B2B SaaS or AI agent product and want a modern developer experience without per-MAU pricing surprises.
Logto launched its first public release in after the Silverhand team open-sourced the project on GitHub in 2021. The repository at github.com/logto-io/logto has since accumulated over 11,900 stars and 783 forks, and the company shipped v1.39.0 on April 30, 2026. Unlike legacy identity providers that bolt multi-tenancy and SSO on as enterprise add-ons, Logto designs around them from the data model up — every user can natively belong to multiple organizations, every API resource can carry its own RBAC scopes, and every tenant can run its own custom domain.
The core problem Logto solves is the "Auth0 trap": you start free, your product grows, and a year later your monthly invoice has crossed five figures because you crossed an MAU threshold or needed enterprise SSO. Logto attacks that with two levers — a fully MPL-2.0 self-hostable codebase, and a hosted plan that charges by access tokens issued (an actual usage signal) rather than by raw MAU. The result is a platform that scales gracefully whether you have 500 users or 500,000.
On Reddit, threads in r/selfhosted and r/SaaS consistently rank Logto alongside Authentik and Keycloak as the "modern" pick — the most upvoted comments praise the developer experience and the "just works" multi-tenancy, while the recurring complaint is that some Pro features (custom domains, MFA bundle, advanced security) are sold as $48-per-month add-ons rather than rolled into the base subscription. On Hacker News, Show HN threads about Logto are routinely positive about the TypeScript codebase and OIDC compliance, with the most thoughtful critique being that the MPL-2.0 license is "weak copyleft" — not a non-starter, but worth understanding before committing. On Product Hunt, the v1.0 launch was a category top-post and the more recent MCP Server post in February 2026 generated solid agentic-AI buzz with multiple developers reporting under-five-minute integrations.
Logto sells Cloud as a tiered subscription with usage-based add-ons, while the entire codebase is free to self-host under MPL-2.0.
| Plan | Price | Key Limits |
|---|---|---|
| Free | $0/mo | Up to 50,000 MAU, 50K access tokens, 3 apps, basic features |
| Pro (base) | $16/mo per tenant | Unlimited MAU, 50K tokens included, then $0.08 per 100 extra |
| Pro + add-ons | $24+/mo | Custom domain, MFA bundle, SSO, RBAC, Organizations: $32–$48 each |
| Enterprise | Contact | Unlimited everything, SAML, SLA, dedicated support, audit log retention |
| Self-hosted | $0 | MPL-2.0, unlimited everything, you run the infrastructure |
Compared with Auth0's B2B Essentials at roughly $150/month for 500 MAU and Clerk's Pro plan at $25/month with $0.02 per MAU after the first 10,000, Logto is meaningfully cheaper at every scale we modelled, especially for B2B SaaS that hit Auth0's organizations add-on.
Best for: Bootstrapped or VC-backed SaaS startups that want first-class multi-tenancy on day one without paying Auth0 enterprise rates; AI and agent products that need OIDC-compliant token issuance plus the new MCP server bridge; and security-conscious teams that prefer self-hosting under MPL-2.0 to avoid US-only data residency.
Not ideal for: Organizations already deeply committed to Keycloak with mature realms and federation graphs (the migration cost is meaningful); pure B2C consumer apps where Firebase Auth's free tier is hard to beat; and regulated industries that require fully air-gapped FedRAMP-style deployments — Logto Cloud does not currently offer that compliance posture, although the self-hosted edition can be run inside one.
Pros:
Cons:
The closest comparables in 2026 are authentik (Python-based, infinitely customizable flow builder, great for self-hosters), Clerk (managed-only, gorgeous React-first UX, but US-hosted and more expensive at scale), and Keycloak (Red Hat-backed, the enterprise default, but heavy and harder to ship modern UIs on top of). For pure backend OIDC, Ory Kratos and Hydra remain strong, but require you to compose three or four projects together to match what Logto ships in one binary.
Yes — for the specific shape of company we describe above. If you are starting a B2B SaaS or AI agent product in 2026 and you do not already have an Auth0 contract, Logto is the cheapest credible way to get OIDC, multi-tenancy, RBAC and enterprise SSO in production this week. The MPL-2.0 license is a real fallback if Cloud pricing ever changes, and the MCP Server is genuinely useful rather than a gimmick. Where you should be cautious is the Pro add-on stack — price the real configuration you need, not the $16 headline. Net of that, an 88/100 reflects a product that is best-in-class for new builds and a serious second look for anyone whose Auth0 invoice has crossed five figures.
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