Zitadel vs Firebase Authentication: Which Should You Choose in 2026?
Choosing between Zitadel and Firebase Authentication 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.
By Toolradar Team · Last updated February 28, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Zitadel
Open-source identity management
Best for you if:
- • You want the higher-rated option (8.2/10 vs 0.0/10)
- • You need api tools features specifically
- • Zitadel is an open-source identity management platform
- • It provides authentication, authorization, and user management
Firebase Authentication
Backend authentication by Google
Best for you if:
- • You need low-code backend features specifically
- • Backend authentication service
- • Multiple sign-in methods
| At a Glance |  Zitadel |  Firebase Authentication |
|---|---|---|
Price | Free + Paid | Free + Paid |
Best For | API Tools | Low-Code Backend |
Rating | 82/100 | —/100 |
| Feature | Zitadel | Firebase Authentication |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| Editorial Score | 82 | — |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | API ToolsHosting & Deployment | Low-Code BackendIdentity & Access |
How Zitadel and Firebase Authentication Compare
Zitadel
Open-source identity management
Free tier available · 82/100 score
Firebase Authentication
Backend authentication by Google
Free tier available
Zitadel is a api tools tool. Firebase Authentication is in low-code backend.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Zitadel
Want the highest-rated option?
Zitadel scores 82/100. Firebase Authentication is unrated.
Go with: Zitadel
Value user reviews?
Neither has user reviews yet.
Go with: Zitadel
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
Zitadel is a api tools tool. Firebase Authentication is in low-code backend. Pick the category that matches your needs.
How important are ratings?
Not all tools have been rated yet.
Key Takeaways
Zitadel
- Higher score: 82/100 vs unrated
- Free tier available
- Our pick for this comparison
Firebase Authentication
- Better fit for low-code backend
The Bottom Line
Zitadel (82/100) is our pick.
Frequently Asked Questions
Is Zitadel or Firebase Authentication better?
Zitadel scores 82/100 in our evaluation. Both are freemium.
What are Zitadel and Firebase Authentication used for?
Zitadel: Open-source identity management. Firebase Authentication: Backend authentication by Google.
What does Zitadel cost vs Firebase Authentication?
Zitadel is freemium (free tier + paid plans). Firebase Authentication is freemium (free tier + paid plans). Visit their websites for detailed pricing.