Hanko

Open source authentication service for developers — add passkeys, passwords, or social logins to your app.

hanko.io

Verified API available Free tier

Quick facts
What is it	Open source authentication service for developers — add passkeys, passwords, or social logins to your app.
Pricing	Freemium — from $29/mo
Free tier	Yes
Platform	Web Application
API	Yes
Best for	implementing secure user authentication, replacing password-based login systems
Domain registered	2015

Data updated Aug. 1, 2026

What does Hanko do?

Hanko is an authentication service that handles user sign-up and login for web applications. It lets developers add various login methods to their apps, including modern passkeys, traditional passwords, one-time passcodes sent via email, and social logins from providers like GitHub and Google. You can mix and match these options to create a custom authentication flow that fits your specific needs, all without building the complex backend infrastructure yourself.

The tool is open source and prioritizes privacy, with data hosting compliant with GDPR and located in Europe. A key feature is its flexibility; you can start with a fully hosted cloud version and switch to a self-hosted setup later without being locked into the platform. The newly released JavaScript SDK gives developers direct control to build custom login user interfaces instead of being forced to use a pre-built one.

Hanko is built for developers and companies that need a secure, scalable way to manage user authentication. It's ideal for startups that want to launch quickly without building auth from scratch, larger companies that need to comply with strict European data privacy laws, and any team looking to modernize their login experience by adding passwordless passkey support alongside traditional methods.

Backend-as-a-Service (BaaS/PaaS)

#authentication#developer tools#gdpr#open source#passkeys

Key features

What makes it stand out

Mix and match login methods including passkeys, passwords, and social logins

Open source code with options for cloud hosting or self-hosting

GDPR compliant with data hosted in Europe

JavaScript SDK for building custom login interfaces

No vendor lock-in; switch between hosting options anytime

Who is Hanko for?

Who benefits most from this tool

implementing secure user authentication

replacing password-based login systems

adding passkey support to applications

Pricing

Free tier available — start without a credit card

STARTER

Free

2 projects
10,000 monthly active users
10,000 free monthly active users
2 projects (paused when inactive)
Passkeys, passwords, passwordless
Social SSO
Multi-factor authentication
Custom domain
Admin dashboard
Community support

PRO

$29.0/month

5 base projects
0.01 additional user cost
10,000 monthly active users
5 additional project cost
10,000 free monthly active users
5 projects ($5/mo per additional)
Passkeys, passwords, passwordless
Social SSO
Multi-factor authentication
Custom domain
Admin dashboard
Personal support (Slack, Discord)
SAML SSO ($49/mo per connection)
Team member invites
Webhooks
Admin API access
Custom SMTP server

ENTERPRISE

Custom

Everything in PRO, plus:

Everything in PRO and ...
Unlimited projects
99.99% SLA
Priority support
Extended audit log retention
Commercial license option for private cloud
Custom features & individualization

Trust & presence

Domain Domain registered 2015

Gallery

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