GitFounders7 Open Source Alternatives to Clerk
A list of 7 carefully selected open-source alternatives to Clerk.
The open-source alternatives are ranked based on our custom ranking system and score. This system takes into account various factors to determine the best alternatives.
If you’re looking for alternative features or workflows, here is a prepared detailed list of Clerk open-source alternatives — each with its own distinctive strengths and key features.
BoxyHQ streamlines web application authentication with its enterprise-grade Single Sign-On (SSO) and Directory Sync solutions. Utilizing SAML, OpenID Connect, and SCIM 2.0 protocols, it enables rapid, secure, and compliant user management.
Key Features
- Enterprise SSO with SAML and OpenID Connect support
- Automated Directory Sync via SCIM 2.0
- Rapid integration reducing development time
- Customizable add-ons including branding and SIEM integration
- Flexible deployment: SaaS and self-hosted options
BoxyHQ provides a comprehensive suite of security building blocks designed to accelerate time-to-market while ensuring robust protection. Its Jackson SSO tool supports SAML and OIDC protocols for seamless authentication, and its Directory Sync automates user and group provisioning using SCIM 2.0. The platform offers easy integration, customizable add-ons, and both SaaS and self-hosted deployment options to fit diverse enterprise needs.
SuperTokens is an open source user authentication solution that provides a secure, scalable alternative to Auth0, Firebase Auth, and AWS Cognito. It empowers developers to integrate robust user authentication quickly with prebuilt UI components and flexible APIs.
Key Features
- Prebuilt and customizable UI for fast setup
- Support for email-password, social, and passwordless authentication
- Seamless integration with 25+ frameworks
- Robust session and user management with RBAC support
- Flexible deployment: open source self-hosted or cloud managed service
- Easy migration from Auth0 and similar providers
- Predictable pricing with free open source core
SuperTokens offers comprehensive authentication features with support for email-password, social logins, and passwordless login methods such as magic links and OTPs. Built for rapid integration, it works seamlessly with over 25 frameworks and provides robust session management, user management dashboards, and customizable flows. Its unique architecture ensures easy migration from existing auth providers and reduces overall costs while maintaining high security and reliability.
Ory is a headless, cloud-native authentication and identity management platform written in Go that scales to support a billion+ users. It replaces traditional IAM solutions with a flexible, modern stack that enhances both user and developer experiences.
Key Features
- Headless, cloud-native IAM solution built in Go
- Supports passkeys, social sign-in, OIDC, Magic Link, MFA, SMS, SAML, TOTP, and more
- Multiple deployment models: Self-hosted, Enterprise Support, Enterprise License, and Ory Network
- Exceptional scalability built to handle billions of users
- Enhanced customization and comprehensive visibility for tailored user experiences
Ory offers a modular approach to identity management with extensive support for standards like OIDC, SAML, TOTP, and more. Its platform enables various deployment models including self-hosted open source, enterprise support, enterprise licensing, and the Ory Network. Designed for high scalability and uninterrupted performance, Ory provides comprehensive customization and integration capabilities that meet evolving security and UX requirements.
Authentik is a self-hosted, open source identity provider that empowers organizations to take control of their authentication processes. It offers flexible, scalable, and secure solutions for both internal and customer-facing applications.
Key Features
- Self-hosted and open source with complete control over identity data
- Supports modern protocols: OAuth2, SAML2, LDAP, SCIM, RADIUS, and Kerberos
- Customizable workflows and pre-built authentication templates
- Robust APIs for automation and seamless integration
- Facilitates secure SSO, MFA, and Zero Trust security implementations
- Easily deployable on Docker, Kubernetes, and via Terraform
Authentik delivers a comprehensive identity solution by supporting a wide range of protocols including OAuth2, SAML2, LDAP, SCIM, RADIUS, and Kerberos. It simplifies implementation with pre-built workflows, customizable authentication templates, and robust APIs for seamless integration with modern infrastructures like Docker, Kubernetes, and Terraform. The tool enables secure Single Sign-On, Multi-factor Authentication, Conditional Access, and Zero Trust security, all managed through transparent, community-reviewed open source code.
Hanko is an advanced open source authentication and user management solution built for the passkey era. It offers a robust, secure, and flexible framework that seamlessly integrates modern passkey technology along with traditional methods such as passwords and 2FA.
Key Features
- Open source with no vendor lock-in
- Supports modern passkeys, 2FA, and SSO
- Embeddable, framework-agnostic web components
- Customizable styling and integration options
- Scalable solution with cost-effective plans for startups
Hanko provides embeddable components and APIs that enable developers to integrate secure user authentication quickly. Supporting a range of login methods—from passwordless with passkeys to optional passwords and social-only logins—Hanko adapts to your needs, delivering modern security with minimal integration effort. Its open source nature ensures you retain full control and flexibility, whether using the cloud or self-hosting.
Logto is an open‐source identity and access management infrastructure that simplifies authentication and authorization for applications of all sizes. It provides features like multi-factor authentication, single sign-on, user management, and multi-tenancy with support for OAuth 2.0, OIDC, and SAML, making it ideal for both consumer apps and enterprise products.
Key Features
- Comprehensive IAM covering both authentication and authorization
- Supports OAuth 2.0, OIDC, and SAML with no framework restrictions
- Includes password, passwordless, social sign-in, and MFA options
- Offers enterprise SSO and multi-tenancy through organizations
- Open-source, self-hostable, and community-driven with robust security
Logto empowers developers to integrate secure and flexible identity solutions in minutes. The tool offers a comprehensive suite that includes password and passwordless authentication, social sign-in, MFA, enterprise SSO, and organizational features for multi-tenant apps. With seamless integration into over 20 modern frameworks, Logto enables you to build scalable and secure authentication workflows while focusing on core business logic.
UnKey is an open source API management platform that empowers developers to build better APIs faster. It simplifies API security, authentication, and analytics, providing robust tools to manage API keys, rate limiting, and usage tracking in a scalable and secure environment.
Key Features
- Quick API key integration with one-way hashing
- Configurable and enforced rate limiting
- Real-time usage analytics and dashboard
- Comprehensive SDK support for multiple languages
- Multi-cloud compatibility with global low latency
- Role-based access control and proactive security features
- Audit logs and IP whitelisting for enhanced compliance
- Automatic key expiration and usage limits per key
- Vercel integration for streamlined deployments
UnKey redefines API management by offering a streamlined solution to quickly add API keys, enforce rate limits, and monitor usage analytics. With support for various languages and frameworks, comprehensive SDKs, and an intuitive REST API, it ensures global low latency and strong security through features like one-way hashed keys, IP whitelisting, and audit logs. Designed for both API-first and UI-first approaches, UnKey offers multi-cloud compatibility and proactive protection measures.
Price comparison of Clerk open-source alternatives
| Tool | Tier 1 | Tier 2 | Tier 3 | Details |
|---|---|---|---|---|
 | $49 Single Sign-On (SSO) | $49 Directory Sync | - | Learn more |
 | $0 Self-hosted | $0.02 Cloud Managed Service | - | Learn more |
 | $0 Open Source | $5 Professional | $20000 Enterprise | Learn more |
 | $29 Startup Plan | - | - | Learn more |
 | $0 Free | $16 Pro | - Enterprise | Learn more |
* Pricing shown is based on publicly available information and may not reflect current rates. Visit each tool's website for detailed pricing information and additional tiers.
About Clerk
Similar Alternatives
Clerk
The easiest way to add authentication and user management to your application. Purpose-built for React, Next.js, Remix, and “The Modern Web”.
2019
51
San Francisco, United States