🔐 security

Clerk costs $6/mo.
These cost $0.

9 free alternatives to Clerk, checked for license, recent activity and real adoption. Each one tells you the catch, so you can switch with your eyes open.

⚡ Quick Verdict · 2027 Guide

The top-rated free, open-source replacement for Clerk is Hanko (Open Source Open Source). Across this category, 8 self-hostable tools are available (including Hanko and Authentik). Switching a 5-person team saves up to $360/year compared to Clerk's $6/mo subscription.

The catch: Requires self-hosting setup, updates, and server maintenance compared to managed Clerk.

See the 9 picks ↓

Clerk vs Free Alternatives

Quick side-by-side comparison · $0/mo vs $6/mo

Alternative	Type	License	Where It Runs	Stars	Head-to-Head
Hanko	open source	Open Source	Self-host	★ 9.1k	Clerk vs Hanko →
Better Auth	open source	Open Source	Local	★ 30.6k	Clerk vs Better Auth →
Authentik	open source	Open Source	Self-host	★ 26.3k	Clerk vs Authentik →
Zitadel	open source	AGPL-3.0	Self-host	★ 15.5k	Clerk vs Zitadel →
Logto	open source	Open Source	Self-host	★ 14.9k	Clerk vs Logto →
SuperTokens	open source	Open Source	Self-host	★ 15.3k	Clerk vs SuperTokens →
Ory	open source	Apache-2.0	Self-host	★ 13.9k	Clerk vs Ory →
Hexclave	open source	Open Source	Self-host	★ 6.9k	Clerk vs Hexclave →
Authgear	open source	Open Source	Self-host	★ 2.1k	Clerk vs Authgear →

The picks

9 open source · ranked by fit

01
Hanko
open sourceOpen SourceSelf-host
9.1knov 2026
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.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
Clone https://github.com/teamhanko/hanko or deploy with Docker Compose
setup
Deploy via Docker or binary release from GitHub and configure environment variables.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit hanko.io ↗Source Compare vs Clerk →also replaces 4 other apps →
02
Better Auth
open sourceOpen SourceLocal
30.6knov 2026
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.
Install, platforms & data +
platforms
desktopcross-platformone-click install
install
Clone https://github.com/better-auth/better-auth or deploy with Docker Compose
setup
Download the native package or installer for your operating system.
your data
All application data lives locally on your own machine.
checked
2026-11-07
Visit better-auth.com ↗Source Compare vs Clerk →also replaces 3 other apps →
03
Authentik
open sourceOpen SourceSelf-host
26.3knov 2026
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.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
Clone https://github.com/goauthentik/authentik or deploy with Docker Compose
setup
Deploy via Docker or binary release from GitHub and configure environment variables.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit goauthentik.io ↗Source Compare vs Clerk →also replaces 6 other apps →
04
Zitadel
open sourceAGPL-3.0Self-host
15.5knov 2026
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.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
Clone https://github.com/zitadel/zitadel or deploy with Docker Compose
setup
Deploy via Docker or binary release from GitHub and configure environment variables.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit zitadel.com ↗Source Compare vs Clerk →also replaces 7 other apps →
05
Logto
open sourceOpen SourceSelf-host
14.9knov 2026
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.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
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.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit logto.io ↗Source Compare vs Clerk →also replaces 3 other apps →
06
SuperTokens
open sourceOpen SourceSelf-host
15.3knov 2026
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.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
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.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit supertokens.com ↗Source Compare vs Clerk →also replaces 5 other apps →
07
Ory
open sourceApache-2.0Self-host
13.9knov 2026
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.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
Clone https://github.com/ory/hydra or deploy with Docker Compose
setup
Deploy via Docker or binary release from GitHub and configure environment variables.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit ory.sh ↗Source Compare vs Clerk →also replaces 7 other apps →
08
Hexclave
open sourceOpen SourceSelf-host
6.9knov 2026
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.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
Clone https://github.com/hexclave/hexclave or deploy with Docker Compose
setup
Deploy via Docker or binary release from GitHub and configure environment variables.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit hexclave.com ↗Source Compare vs Clerk →also replaces 3 other apps →
09
Authgear
open sourceOpen SourceSelf-host
2.1knov 2026
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.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
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.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit authgear.com ↗Source Compare vs Clerk →also replaces 4 other apps →

Clerk Head-to-Head Comparisons (2027)

Side-by-side trade-off breakdowns · 9 free alternatives

Clerk vs HankoOpen Source · Self-host →

Clerk vs Better AuthOpen Source · Local →

Clerk vs AuthentikOpen Source · Self-host →

Clerk vs ZitadelAGPL-3.0 · Self-host →

Clerk vs LogtoOpen Source · Self-host →

Clerk vs SuperTokensOpen Source · Self-host →

Clerk vs OryApache-2.0 · Self-host →

Clerk vs HexclaveOpen Source · Self-host →

Clerk vs AuthgearOpen Source · Self-host →

Frequently Asked Questions

Direct answers · Clerk open-source replacements

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.

Can I self-host a free replacement for Clerk?+

Yes. Of the 9 free alternatives to Clerk, 8 can be self-hosted on your own server or local machine: Hanko (Open Source), Authentik (Open Source), Zitadel (AGPL-3.0), Logto (Open Source), SuperTokens (Open Source), Ory (Apache-2.0), Hexclave (Open Source), Authgear (Open Source).

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.

Should I vibe-code or build my own Clerk clone from scratch?+

Our build verdict for Clerk is NO (use a free alternative, save the tokens). 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.

What is the catch when switching from Clerk to Hanko?+

Requires self-hosting setup, updates, and server maintenance compared to managed Clerk.