Lets Encrypt vs OpenFGA: Which is Better in 2026?
Choosing between Lets Encrypt and OpenFGA 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.
Bottom line: Lets Encrypt is our overall pick for security workflows. Pick OpenFGA if you need a fully free option.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Lets Encrypt
Free automated SSL/TLS certificates
Best for you if:
- • Let's Encrypt is a free certificate authority providing SSL/TLS certificates
- • It automates the issuance and renewal of HTTPS certificates for any website
OpenFGA
Fine-grained authorization inspired by Google's Zanzibar, built for scalability and flexibility.
Best for you if:
- • Implements fine-grained authorization inspired by Google's Zanzibar.
- • Supports ReBAC, RBAC, and ABAC with a flexible modeling language.
| At a Glance |  Lets Encrypt |  OpenFGA |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Security | Security |
Rating | 4.8/5 | - |
Choose Lets Encrypt or OpenFGA?
Choose Lets Encrypt if
Free automated SSL/TLS certificates
- Free SSL certificates
- Automated renewal
- Wide support
Choose OpenFGA if
Fine-grained authorization inspired by Google's Zanzibar, built for scalability and flexibility.
- Highly scalable and performant for authorization checks.
- Flexible modeling language supports various access control paradigms.
- Open-source and backed by the Cloud Native Computing Foundation (CNCF).
| Feature | Lets Encrypt | OpenFGA |
|---|---|---|
| Pricing Model | Free | Free |
| User Rating | ★4.8/5 20 reviews | No ratings yet |
| Categories | SecurityAutomation | SecurityDeveloper Tools |
In-Depth Analysis
Lets Encrypt
Free automated SSL/TLS certificates
Strengths
- +Free SSL certificates
- +Automated renewal
- +Wide support
- +Open source
- +Industry standard
Weaknesses
- -90-day certificates
- -No wildcard easy
- -Setup complexity
- -Rate limits
- -No warranty
Key features
OpenFGA
Fine-grained authorization inspired by Google's Zanzibar, built for scalability and flexibility.
Strengths
- +Highly scalable and performant for authorization checks.
- +Flexible modeling language supports various access control paradigms.
- +Open-source and backed by the Cloud Native Computing Foundation (CNCF).
- +Easy integration with existing applications via SDKs.
Weaknesses
- -Requires Docker for quick local setup, which might be an initial barrier for some.
- -New users may need to learn the specific modeling language and concepts.
Key features
Pricing: Lets Encrypt vs OpenFGA
| Plan | Lets Encrypt | OpenFGA |
|---|---|---|
| Tier 1 | $0 Free | Free OpenFGA |
Pricing verified from each vendor's public pricing page. Compare in detail on Lets Encrypt pricing and OpenFGA pricing.
Who Should Use What?
On a budget?
Both are free. Compare plans on their websites.
Go with: Lets Encrypt
Want the highest-rated option?
Lets Encrypt is rated 4.8/5. OpenFGA has no ratings yet.
Go with: Lets Encrypt
Value user reviews?
Lets Encrypt: 20 reviews (4.8/5). OpenFGA: no ratings yet.
Go with: Lets Encrypt
3 Questions to Help You Decide
What's your budget?
Both are free. Pricing won't help you decide here.
What's your use case?
Both are security tools. Compare their specific features to decide.
How important are ratings?
Lets Encrypt is rated 4.8/5; OpenFGA has no ratings yet.
Key Takeaways
Lets Encrypt
- Completely free
- Our pick for this comparison
OpenFGA
- Choose if you want fine-grained authorization inspired by Google's Zanzibar, built for scalability and flexibility
The Bottom Line
Lets Encrypt is our pick.
Frequently Asked Questions
Is Lets Encrypt or OpenFGA better?
Lets Encrypt is rated in our evaluation. Both are free.
What are Lets Encrypt and OpenFGA used for?
Lets Encrypt: Free automated SSL/TLS certificates. OpenFGA: Fine-grained authorization inspired by Google's Zanzibar, built for scalability and flexibility..
What does Lets Encrypt cost vs OpenFGA?
Lets Encrypt is completely free. OpenFGA is completely free. Visit their websites for detailed pricing.