European Clerk Alternatives
A curated collection of the 3 best European alternatives to Clerk.
The best European alternative to Clerk is Zitadel. If that doesn't suit you, we've compiled a ranked list of other European Clerk alternatives to help you find a suitable replacement. Other interesting alternatives to Clerk are: Hanko and tiun.
Clerk alternatives are mainly Developer Tools but may also be Security & Privacy Solutions or Cloud Computing & Hosting Services. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Clerk.
This list contains services from companies based in a member state of the European Union (EU), the European Economic Area (EEA) and the European Free Trade Association (EFTA). You can read more about the listing conditions here.
Written by Piotr Kulpinski
Clerk
Manage user identities securely with customizable authentication, SSO, MFA, and RBAC. Offers easy APIs, programmable workflows, and multi-tenancy for developers.
ZITADEL offers a simplified identity infrastructure specifically designed for developers. It provides robust and secure authentication management for your applications, allowing you to customize features as your user base grows, thanks to its easy-to-use APIs and programmable workflows. Being both serverless and open source, it grants you significant flexibility in deployment – host it on your own infrastructure or utilize their managed services.
Key benefits that make identity management straightforward:
- Comprehensive Identity Suite: Effectively manages various user types, including consumers (B2C), businesses (B2B), and internal employees.
- Versatile Authentication Options: Provides a customizable hosted login page, supports modern methods like Single Sign-On (SSO) and Social Logins through prebuilt templates, and allows you to build a completely custom login UI using its APIs.
- Enhanced Account Security: Enforce strong security measures such as Multifactor Authentication (MFA) and leverage Passkeys for a more secure and user-friendly authentication experience.
- Granular Authorization Control: Implement fine-grained Role-Based Access Control (RBAC) and benefit from its core multi-tenancy architecture, ideal for B2B applications.
- Exceptional Extensibility: Seamlessly adapt the platform to your existing workflows, user management processes, and corporate branding guidelines. Utilize ZITADEL Actions to trigger custom workflows based on predefined events, all without needing to deploy and manage your own code.
- Developer-Centric Design: Built from the ground up for developers, offering an adaptable identity infrastructure with options for custom code extensions and strong, reliable security defaults, all supported by an active and growing community.
Open source authentication solution with passkeys, 2FA, SSO support. GDPR compliant, built in Europe. Switch between self-hosted and cloud anytime.
Hanko is a privacy-first, open source authentication platform built in Germany that puts developers in complete control of their authentication stack. Unlike traditional auth providers, Hanko offers seamless migration between self-hosted and cloud deployments with zero vendor lock-in.
Key features include:
- Passkey-first authentication with FIDO2 certification for phishing-resistant security
- Flexible authentication methods: passwords, 2FA, SSO, OAuth, and passcodes
- Hanko Elements: Framework-agnostic web components for instant integration
- GDPR compliance by design with data minimalism principles
- Complete API control for custom frontend and mobile implementations
The platform supports multiple authentication flows - from passwordless-only setups to traditional password systems, social logins, or hybrid approaches. Hanko Elements provide drop-in UI components that work with any web framework, featuring customizable styling to match your brand.
Trusted by 10,000+ developers, Hanko offers both a complete authentication solution and a standalone Passkey API for adding WebAuthn support to existing systems. Built with European privacy standards, hosted in Europe, and designed for developers who refuse to compromise on security or data ownership.
Complete backend solution combining authentication, payments, customer database, and AI analytics in one unified platform for SaaS and AI companies.
tiun provides a comprehensive backend solution specifically designed for AI and SaaS companies, eliminating the complexity of managing multiple single-purpose tools. Instead of juggling scattered accounts, dashboards, and exponentially growing costs, you get everything in one unified platform.
Key features include:
- Authentication system with social SSO, multifactor auth (SMS, email), and ready-to-use components for sign up, login, and user profiles
- Payment processing with 2.9% + 30¢ transaction fees, supporting one-time payments, subscriptions, and usage-based billing
- Customer database that automatically syncs user data, subscription status, and transaction history without complex synchronization logic
- AI analytics providing complete visibility into user behavior, payment patterns, and product usage
The platform serves as your Merchant of Record, handling tax compliance and chargebacks while offering pre-built checkout components that keep users on your page. Advanced event and session tracking captures every user interaction at the profile level, giving you actionable insights across business, engineering, product, and marketing teams.
Integration is simple - install with a single command and let the AI agent handle the complex setup. No webhooks, no custom business logic, no maintenance headaches. Companies like Res Publica have seen 21% increases in paying users after implementing tiun's usage-based billing system.
Built with GDPR compliance and hosted in Europe, tiun transforms the traditional fragmented backend approach into a cohesive, scalable solution that grows with your business.
Clerk
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