Stack Auth vs Authelia: Which Should You Choose in 2026?
Choosing between Stack Auth and Authelia 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 March 22, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Stack Auth
Open-source authentication and user management for developers, designed for rapid integration and flexibility.
Best for you if:
- 0
- • You need identity & access features specifically
- • Open-source authentication and user management suite.
- • Offers features like RBAC, organizations, and 3rd-party OAuth.
Authelia
Open-source authentication and authorization server
Best for you if:
- 0
- • You need something completely free
- • You need password managers features specifically
- • Authelia is an open-source authentication server providing SSO and 2FA for applications
- • It works as a reverse proxy companion to protect internal services with access control
| At a Glance |  Stack Auth |  Authelia |
|---|---|---|
Price | Free + Paid | Free |
Best For | Identity & Access | Password Managers |
Rating | — | — |
| Feature | Stack Auth | Authelia |
|---|---|---|
| Pricing Model | Freemium | Free |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Identity & Access | Password ManagersIdentity & Access |
How Stack Auth and Authelia Compare
Stack Auth
Open-source authentication and user management for developers, designed for rapid integration and flexibility.
Free tier available
Authelia
Open-source authentication and authorization server
Free
Stack Auth is a identity & access tool. Authelia is in password managers.
Who Should Use What?
On a budget?
Authelia is free. Stack Auth is freemium.
Go with: Authelia
Want the highest-rated option?
Neither has user reviews yet.
Go with: Stack Auth
Value user reviews?
Neither has user reviews yet.
Go with: Stack Auth
3 Questions to Help You Decide
What's your budget?
Stack Auth is freemium. Authelia is free. Go with Authelia if free matters most.
What's your use case?
Stack Auth is a identity & access tool. Authelia is in password managers. Pick the category that matches your needs.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Stack Auth
- 0
- Free tier available
- Our pick for this comparison
Authelia
- Completely free
- Better fit for password managers
The Bottom Line
Stack Auth is our pick. That said, Authelia is free — hard to beat on price.
Frequently Asked Questions
Is Stack Auth or Authelia better?
Stack Auth is rated high in our evaluation. Stack Auth is freemium and Authelia is free.
What are Stack Auth and Authelia used for?
Stack Auth: Open-source authentication and user management for developers, designed for rapid integration and flexibility.. Authelia: Open-source authentication and authorization server.
What does Stack Auth cost vs Authelia?
Stack Auth is freemium (free tier + paid plans). Authelia is completely free. Visit their websites for detailed pricing.