Casdoor vs Zitadel: Which is Better in 2026?
Choosing between Casdoor and Zitadel comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Casdoor
An open-source, UI-first identity and access management and single sign-on platform.
Best for you if:
- • You need something completely free
- • You need identity & access features specifically
- • Open-source IAM/SSO platform with a modern web UI.
- • Supports a wide range of authentication protocols and identity providers.
Zitadel
Open-source identity management
Best for you if:
- • You need security features specifically
- • Zitadel is an open-source identity management platform
- • It provides authentication, authorization, and user management
| At a Glance |  Casdoor |  Zitadel |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Identity & Access | Security |
Rating | - | - |
Free plan | Yes | Yes |
Choose Casdoor or Zitadel?
Choose Casdoor if
An open-source, UI-first identity and access management and single sign-on platform.
- Comprehensive support for various authentication standards and identity providers
- Includes SaaS management capabilities for subscription businesses
- Open-source and UI-first for ease of use and customization
- You want a fully free tool (Zitadel requires payment)
- Your work is identity & access-shaped, not security-shaped
Choose Zitadel if
Open-source identity management
- Open source IAM
- Self-hostable
- Good features
- Your work is security-shaped, not identity & access-shaped
| Feature | Casdoor | Zitadel |
|---|---|---|
| Pricing Model | Free | Freemium |
| User Rating | No ratings yet | No ratings yet |
| Categories | Identity & AccessSecurity | SecurityDeveloper Tools |
In-Depth Analysis
Casdoor
An open-source, UI-first identity and access management and single sign-on platform.
Strengths
- +Comprehensive support for various authentication standards and identity providers
- +Includes SaaS management capabilities for subscription businesses
- +Open-source and UI-first for ease of use and customization
- +Scalable and performant for high-concurrency environments
- +Well-documented integration process
Weaknesses
- -Requires technical expertise for deployment and advanced configuration
- -Reliance on community for additional provider requests
Key features
Zitadel
Open-source identity management
Strengths
- +Open source IAM
- +Self-hostable
- +Good features
- +Active development
- +Cloud option
Weaknesses
- -Learning curve
- -Setup complexity
- -Documentation improving
- -Smaller community
- -Still maturing
Key features
Who Should Use What?
On a budget?
Casdoor is free. Zitadel is freemium.
Go with: Casdoor
Want the highest-rated option?
Neither has ratings yet.
Too early to call on ratings — compare on features and pricing.
Value user reviews?
Neither has ratings yet.
Too early to call — neither has ratings yet.
3 Questions to Help You Decide
What's your budget?
Casdoor is free. Zitadel is freemium. Go with Casdoor if free matters most.
What's your use case?
Casdoor is a identity & access tool. Zitadel is in security. Pick the category that matches your needs.
How important are ratings?
Neither has ratings yet.
Key Takeaways
Zitadel
- Free tier available
- Our pick for this comparison
Casdoor
- Completely free
- Better fit for identity & access
The Bottom Line
Zitadel is our pick. That said, Casdoor is free, hard to beat on price.
Frequently Asked Questions
Is Casdoor or Zitadel better?
Zitadel is rated in our evaluation. Casdoor is free and Zitadel is freemium.
What are Casdoor and Zitadel used for?
Casdoor: An open-source, UI-first identity and access management and single sign-on platform.. Zitadel: Open-source identity management.
What does Casdoor cost vs Zitadel?
Casdoor is completely free. Zitadel is freemium (free tier + paid plans). Visit their websites for detailed pricing.