🛡️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.
// 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
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