# 9 Best Open Source Alternatives for Clerk

Canonical: https://caniforkit.com/clerk
Last updated: 2026-11-07

Looking for the best open source alternative for Clerk? Compare 9 verified free and open source alternatives to Clerk (Hanko, Better Auth, Authentik) with license details, self-hosting requirements, and practical trade-offs.

## Clerk Overview & Subscription Cost
- **Product**: Clerk
- **Category**: [security](https://caniforkit.com/category/security)
- **Paid Subscription Price**: $6/month per seat
- **1-Seat Annualized Cost**: $72/year
- **5-Person Team Annualized Cost**: $360/year
- **10-Person Team Annualized Cost**: $720/year
- **Can I Vibe-Code / Rebuild It Myself?**: NO (use a free alternative, save the tokens)
- **Rebuild Verdict**: Instead of paying recurring SaaS fees for Clerk or rebuilding it from scratch, deploy one of the 9 battle-tested open-source alternatives like Hanko.

## Verified Free & Open Source Alternatives

| Alternative | Type | License | Runs On | GitHub Stars | Head-to-Head |
| --- | --- | --- | --- | --- | --- |
| [Hanko](https://caniforkit.com/fork/hanko) | Open Source | Open Source | Self-host | ★ 9.1k | [Compare vs Clerk](https://caniforkit.com/vs/clerk-vs-hanko) |
| [Better Auth](https://caniforkit.com/fork/better-auth) | Open Source | Open Source | Local | ★ 30.6k | [Compare vs Clerk](https://caniforkit.com/vs/clerk-vs-better-auth) |
| [Authentik](https://caniforkit.com/fork/authentik) | Open Source | Open Source | Self-host | ★ 26.3k | [Compare vs Clerk](https://caniforkit.com/vs/clerk-vs-authentik) |
| [Zitadel](https://caniforkit.com/fork/zitadel) | Open Source | AGPL-3.0 | Self-host | ★ 15.5k | [Compare vs Clerk](https://caniforkit.com/vs/clerk-vs-zitadel) |
| [Logto](https://caniforkit.com/fork/logto) | Open Source | Open Source | Self-host | ★ 14.9k | [Compare vs Clerk](https://caniforkit.com/vs/clerk-vs-logto) |
| [SuperTokens](https://caniforkit.com/fork/supertokens) | Open Source | Open Source | Self-host | ★ 15.3k | [Compare vs Clerk](https://caniforkit.com/vs/clerk-vs-supertokens) |
| [Ory](https://caniforkit.com/fork/ory) | Open Source | Apache-2.0 | Self-host | ★ 13.9k | [Compare vs Clerk](https://caniforkit.com/vs/clerk-vs-ory) |
| [Hexclave](https://caniforkit.com/fork/hexclave) | Open Source | Open Source | Self-host | ★ 6.9k | [Compare vs Clerk](https://caniforkit.com/vs/clerk-vs-hexclave) |
| [Authgear](https://caniforkit.com/fork/authgear) | Open Source | Open Source | Self-host | ★ 2.1k | [Compare vs Clerk](https://caniforkit.com/vs/clerk-vs-authgear) |

## In-Depth Alternative Profiles

### Hanko
- **Fork Page**: [Hanko Profile](https://caniforkit.com/fork/hanko)
- **Head-to-Head Comparison**: [Clerk vs Hanko](https://caniforkit.com/vs/clerk-vs-hanko)
- **Official Website**: https://hanko.io/
- **Source Code Repository**: https://github.com/teamhanko/hanko
- **License**: Open Source
- **Runs On**: Self-host
- **GitHub Stars**: 9.1k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Open source authentication platform supporting passkeys, 2FA, SSO, and social login. Self-host or use Hanko Cloud, with full control over your data and no lock-in.
- **The Catch vs Clerk**: Requires self-hosting setup, updates, and server maintenance compared to managed Clerk.
- **Installation**: Clone https://github.com/teamhanko/hanko or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

### Better Auth
- **Fork Page**: [Better Auth Profile](https://caniforkit.com/fork/better-auth)
- **Head-to-Head Comparison**: [Clerk vs Better Auth](https://caniforkit.com/vs/clerk-vs-better-auth)
- **Official Website**: https://better-auth.com
- **Source Code Repository**: https://github.com/better-auth/better-auth
- **License**: Open Source
- **Runs On**: Local
- **GitHub Stars**: 30.6k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: desktop, cross-platform, one-click install
- **Summary**: A comprehensive authentication framework offering email/password, social sign-on, two-factor auth, and multi-tenant support with full TypeScript integration.
- **The Catch vs Clerk**: Community-driven open source project without dedicated enterprise SLAs.
- **Installation**: Clone https://github.com/better-auth/better-auth or deploy with Docker Compose
- **Setup**: Download the native package or installer for your operating system.
- **Data Storage**: All application data lives locally on your own machine.

### Authentik
- **Fork Page**: [Authentik Profile](https://caniforkit.com/fork/authentik)
- **Head-to-Head Comparison**: [Clerk vs Authentik](https://caniforkit.com/vs/clerk-vs-authentik)
- **Official Website**: https://goauthentik.io/
- **Source Code Repository**: https://github.com/goauthentik/authentik
- **License**: Open Source
- **Runs On**: Self-host
- **GitHub Stars**: 26.3k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: authentik is an open-source identity provider that offers self-hosted authentication, authorization, and user management for businesses of all sizes.
- **The Catch vs Clerk**: Requires self-hosting setup, updates, and server maintenance compared to managed Auth0.
- **Installation**: Clone https://github.com/goauthentik/authentik or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

### Zitadel
- **Fork Page**: [Zitadel Profile](https://caniforkit.com/fork/zitadel)
- **Head-to-Head Comparison**: [Clerk vs Zitadel](https://caniforkit.com/vs/clerk-vs-zitadel)
- **Official Website**: https://zitadel.com
- **Source Code Repository**: https://github.com/zitadel/zitadel
- **License**: AGPL-3.0
- **Runs On**: Self-host
- **GitHub Stars**: 15.5k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: ZITADEL provides a comprehensive identity management solution with easy APIs, customizable workflows, and serverless deployment options.
- **The Catch vs Clerk**: Requires self-hosting setup, updates, and server maintenance compared to managed Auth0.
- **Installation**: Clone https://github.com/zitadel/zitadel or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

### Logto
- **Fork Page**: [Logto Profile](https://caniforkit.com/fork/logto)
- **Head-to-Head Comparison**: [Clerk vs Logto](https://caniforkit.com/vs/clerk-vs-logto)
- **Official Website**: https://logto.io
- **Source Code Repository**: https://github.com/logto-io/logto
- **License**: Open Source
- **Runs On**: Self-host
- **GitHub Stars**: 14.9k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: An open-source identity solution offering customizable login experiences, multi-tenant support, and comprehensive user management.
- **The Catch vs Clerk**: Requires self-hosting setup, updates, and server maintenance compared to managed Clerk.
- **Installation**: Clone https://github.com/logto-io/logto or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

### SuperTokens
- **Fork Page**: [SuperTokens Profile](https://caniforkit.com/fork/supertokens)
- **Head-to-Head Comparison**: [Clerk vs SuperTokens](https://caniforkit.com/vs/clerk-vs-supertokens)
- **Official Website**: https://supertokens.com
- **Source Code Repository**: https://github.com/supertokens/supertokens-core
- **License**: Open Source
- **Runs On**: Self-host
- **GitHub Stars**: 15.3k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Open-source authentication solution offering flexible, self-hosted user management with advanced features and easy integration.
- **The Catch vs Clerk**: Requires self-hosting setup, updates, and server maintenance compared to managed Okta.
- **Installation**: Clone https://github.com/supertokens/supertokens-core or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

### Ory
- **Fork Page**: [Ory Profile](https://caniforkit.com/fork/ory)
- **Head-to-Head Comparison**: [Clerk vs Ory](https://caniforkit.com/vs/clerk-vs-ory)
- **Official Website**: https://ory.sh
- **Source Code Repository**: https://github.com/ory/kratos
- **License**: Apache-2.0
- **Runs On**: Self-host
- **GitHub Stars**: 13.9k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Ory is a certified and battle-tested identity solution backed by a large open source community and trusted by Fortune 500 companies.
- **The Catch vs Clerk**: Requires self-hosting setup, updates, and server maintenance compared to managed Auth0.
- **Installation**: Clone https://github.com/ory/hydra or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

### Hexclave
- **Fork Page**: [Hexclave Profile](https://caniforkit.com/fork/hexclave)
- **Head-to-Head Comparison**: [Clerk vs Hexclave](https://caniforkit.com/vs/clerk-vs-hexclave)
- **Official Website**: https://www.hexclave.com/
- **Source Code Repository**: https://github.com/hexclave/hexclave
- **License**: Open Source
- **Runs On**: Self-host
- **GitHub Stars**: 6.9k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Self-hostable platform combining user auth, payments, email, and analytics into modular building blocks that fit around your existing product.
- **The Catch vs Clerk**: Requires self-hosting setup, updates, and server maintenance compared to managed Clerk.
- **Installation**: Clone https://github.com/hexclave/hexclave or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

### Authgear
- **Fork Page**: [Authgear Profile](https://caniforkit.com/fork/authgear)
- **Head-to-Head Comparison**: [Clerk vs Authgear](https://caniforkit.com/vs/clerk-vs-authgear)
- **Official Website**: https://www.authgear.com/
- **Source Code Repository**: https://github.com/authgear/authgear-server
- **License**: Open Source
- **Runs On**: Self-host
- **GitHub Stars**: 2.1k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Authgear is a managed IAM platform handling authentication, SSO, and user management for B2C and B2B apps, with biometrics, MFA, and zero-trust support.
- **The Catch vs Clerk**: Requires self-hosting setup, updates, and server maintenance compared to managed Clerk.
- **Installation**: Clone https://github.com/authgear/authgear-server or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

## Frequently Asked Questions

### What is the best free alternative to Clerk?
The top free alternative to Clerk is Hanko (open source, Open Source). Open source authentication platform supporting passkeys, 2FA, SSO, and social login. Self-host or use Hanko Cloud, with full control over your data and no lock-in. Other popular Clerk replacements include Better Auth, Authentik, Zitadel.

### How much does switching from Clerk to a free alternative save?
Clerk starts at $6/month per seat ($72/year). Switching a 5-person team to a free alternative like Hanko saves $360 per year in software subscription fees.

### What is the catch when switching away from Clerk?
While Hanko replaces core Clerk features without subscription fees, the real-world trade-off is: Requires self-hosting setup, updates, and server maintenance compared to managed Clerk.

## Related

- [security Software Category Hub](https://caniforkit.com/category/security)
- [All Paid SaaS Alternatives Index](https://caniforkit.com/alternatives)
- [Self-Hosted Software Directory](https://caniforkit.com/self-hosted)
- [Homepage](https://caniforkit.com)