FusionAuth vs Auth0: Which Should You Choose in 2026?
Choosing between FusionAuth and Auth0 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:
FusionAuth
Customer identity and access management
Best for you if:
- • You need low-code backend features specifically
- • FusionAuth is a complete identity platform for authentication and authorization
- • It provides login, registration, SSO, and user management with self-hosting options
Auth0
Identity platform for developers
Best for you if:
- • You want the higher-rated option (8.8/10 vs 8.4/10)
- • You need api tools features specifically
- • Industry-leading identity platform
- • Authentication and authorization as a service
| At a Glance |  FusionAuth |  Auth0 |
|---|---|---|
Price | Free + Paid | Free + Paid |
Best For | Low-Code Backend | API Tools |
Rating | 84/100 | 88/100 |
| Feature | FusionAuth | Auth0 |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| Editorial Score | 84 | 88 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Low-Code BackendHosting & Deployment | API ToolsIdentity & Access |
How FusionAuth and Auth0 Compare
FusionAuth
Customer identity and access management
Free tier available · 84/100 score
Auth0
Identity platform for developers
Free tier available · 88/100 score
FusionAuth is a low-code backend tool. Auth0 is in api tools.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: FusionAuth
Want the highest-rated option?
FusionAuth: 84/100. Auth0: 88/100.
Go with: Auth0
Value user reviews?
Neither has user reviews yet.
Go with: Auth0
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?
FusionAuth is a low-code backend tool. Auth0 is in api tools. Pick the category that matches your needs.
How important are ratings?
Auth0 scores higher: 88/100 vs 84/100.
Key Takeaways
Auth0
- Higher score: 88/100 vs 84
- Free tier available
- Our pick for this comparison
FusionAuth
- Better fit for low-code backend
The Bottom Line
Auth0 (88/100) is our pick.
Frequently Asked Questions
Is FusionAuth or Auth0 better?
Auth0 scores 88/100 in our evaluation. Both are freemium.
What are FusionAuth and Auth0 used for?
FusionAuth: Customer identity and access management. Auth0: Identity platform for developers.
What does FusionAuth cost vs Auth0?
FusionAuth is freemium (free tier + paid plans). Auth0 is freemium (free tier + paid plans). Visit their websites for detailed pricing.