👤Infinity ID · Stable

The open-source Clerk 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 CLERK

Clerk is a commercial authentication and user-management platform for modern web apps, known for prebuilt UI components and tight React/Next.js integration.

When to consider Infinity ID

▸You want to self-host authentication 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 (OIDC / OAuth 2.0 with PKCE) over SDK lock-in
▸You need TOTP multi-factor authentication and role-based access control
▸You want to avoid monthly-active-user pricing tiers

Infinity ID vs Clerk — at a glance

Clerk
Infinity ID
Licensing
Proprietary / commercial
Open-source (Apache-2.0)
Hosting model
Clerk is delivered primarily as a vendor-managed service
Self-hosted on your own local, cloud, or hybrid infrastructure
Integration model
Prebuilt UI components and framework SDKs
Standards-based: OpenID Connect + OAuth 2.0 with PKCE
MFA
Multiple factors managed by the platform
TOTP multi-factor authentication
Access control
Organisations, roles and permissions
Role-based access control (RBAC)
Password security
Managed secure hashing
Argon2id hashing with rotating signing keys (RS256 + JWKS)
Maturity
Clerk is an established, widely-adopted platform
Newer project — stable
// AN HONEST NOTE

Clerk offers a polished developer experience with drop-in UI components, session management and a generous managed free tier. Infinity ID is protocol-first and self-hosted — you build your own UI against standard flows. Choose based on whether you value convenience or control more.

Clerk alternative — FAQ

Does Infinity ID have prebuilt UI components like Clerk?
No — Infinity ID is a protocol-first identity provider. You integrate via standard OpenID Connect / OAuth 2.0 flows and build or reuse your own UI, which gives full control over branding and UX.
Is Infinity ID free?
Yes — open source under Apache-2.0 and free to self-host, with no monthly-active-user tiers. Your cost is your own infrastructure.
Where is user data stored with Infinity ID?
On your own infrastructure — useful when data residency or full data ownership is a requirement.
// OTHER ALTERNATIVES
Infinity ID vs Auth0 →Infinity Observe vs Datadog →Infinity Data vs Pinecone →Infinity Stream vs Kafka →Infinity ID vs Okta →Infinity ID vs Amazon Cognito →Infinity Observe vs New Relic →Infinity Observe vs Splunk →Infinity Data vs Elasticsearch →Infinity Stream vs Confluent →Infinity Stream vs Amazon Kinesis →