🛡️Infinity ID · Stable

The open-source Auth0 alternative

Infinity ID is an open-source, self-hostable identity provider written in Rust. It implements standard authentication protocols so teams that prefer to own their identity infrastructure have a self-hosted option.

See Infinity ID in the stack →★ View source

// ABOUT AUTH0

Auth0 (by Okta) is a widely-used commercial identity platform providing hosted authentication, authorisation and user management.

When to consider Infinity ID

▸You want to self-host identity and keep user data on your own infrastructure

▸You prefer an open-source (Apache-2.0) codebase you can audit and modify

▸You want standards-based auth: OpenID Connect and OAuth 2.0 with PKCE

▸You need TOTP multi-factor authentication and role-based access control

▸You want to avoid per-seat or per-active-user pricing models

Infinity ID vs Auth0 — at a glance

Auth0

Infinity ID

Licensing

Proprietary / commercial

Open-source (Apache-2.0)

Hosting model

Auth0 is delivered primarily as a vendor-managed service

Self-hosted on your own local, cloud, or hybrid infrastructure

Standards

OIDC, OAuth 2.0, SAML and more

OpenID Connect + OAuth 2.0 with PKCE

MFA

Multiple factors including TOTP, push, WebAuthn

TOTP multi-factor authentication

Access control

RBAC and fine-grained authorisation

Role-based access control (RBAC)

Password security

Managed secure hashing

Argon2id hashing with rotating signing keys (RS256 + JWKS)

Maturity

Auth0 is an established, widely-adopted platform

Newer project — stable

// AN HONEST NOTE

Auth0 is a mature, enterprise-proven platform with a broad feature set and ecosystem. Infinity ID is a newer, focused, self-hosted alternative — evaluate both against your compliance, scale and support requirements.

Auth0 alternative — FAQ

Is Infinity ID a drop-in replacement for Auth0?

Not a drop-in replacement. Infinity ID implements standard protocols (OpenID Connect, OAuth 2.0 with PKCE), so many integrations that rely on standards can be migrated, but you should validate your specific flows, extensions and compliance needs before switching.

Is Infinity ID free?

Yes — Infinity ID is open source under Apache-2.0 and free to self-host. You pay only for the infrastructure you run it on.

Where is user data stored with Infinity ID?

On your own infrastructure. Because Infinity ID is self-hosted, you control where identity data lives, which can help with data-residency requirements.

// OTHER ALTERNATIVES

Infinity Observe vs Datadog →Infinity Data vs Pinecone →Infinity Stream vs Kafka →