
Auth0
Keycloak
authentik
Clerk
Okta
SuperTokens
Authelia
The Identity Infrastructure for Modern B2B SaaS

Decode and verify SSL/TLS certificates online. Extract X.509 details including issuer, validity, SAN, and fingerprint. Fast, secure, and browser-based.

Which is more popular?
Based on our record, ZITADEL seems to be a lot more popular than Cert Decoder. While we know about 19 links to ZITADEL, we've tracked only 1 mention of Cert Decoder.
Website, pricing, platforms and company facts side by side.
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| Website | zitadel.com | certdecoder.com |
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| Company | Startup from the United States · 20 - 49 employees · 2021 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Zitadel is the open-source alternative for identity management, built specifically to solve the complex multi-tenancy and fine-grained authorization challenges developers face today. We provide a turnkey solution that handles secure login, organization management, and audit trails so you can ship...
Cert Decoder is a free online tool that helps you decode X.509 SSL/TLS certificates in PEM format. It instantly shows important information like the issuer, expiry date, SAN entries, and fingerprint. All data is processed locally in your browser, so nothing is ever sent or stored elsewhere.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of ZITADEL yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing ZITADEL and Cert Decoder.
Cert Decoder's answer:
I built certdecoder.com over the weekend for my own needs. Sometimes in my work, I need to verify and check certificate details.
Cert Decoder's answer:
certdecoder.com was built using just JavaScript and HTML—simple, fast, and with all processing happening locally in your browser, so no certificate data is sent to any server
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Cert Decoder's answer:
Simple, fast, and reliable. Some similar tools can’t even decode basic certificates. I rigorously tested my tool with many real-world certificates and covered several edge cases where competitors fall short.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Share your experience with using ZITADEL and Cert Decoder. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Zitadel is an open-source identity management platform — a self-hosted alternative to Auth0, Okta, and Firebase Auth. It provides authentication, authorization, and user management with a comprehensive API. - Source: dev.to / 6 months ago
Looks nice, we've been using https://zitadel.com/ and the journey to mutli-tennancy was fairly straight forward. - Source: Hacker News / over 1 year ago
If you prefer an open source, and maybe more mature, alternative for multi tenant/b2b auth then have a look at https://zitadel.com (disclosure: work for zitadel). - Source: Hacker News / about 2 years ago
Why? Because I built certdecoder.com and couldn’t find a decent place to submit it. So I said screw it — I’ll build my own. With blackjack and hookers. - Source: dev.to / over 1 year ago
When comparing ZITADEL and Cert Decoder, you can also consider the following products.

Auth0 is a program for people to get authentication and authorization services for their own business use.
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Open Source Identity and Access Management for modern Applications and Services.
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authentik is an open-source identity provider focused on flexibility and versatility.
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Clerk.io, the artificial intelligence for e-commerce that knows your customers interests.
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Enterprise-grade identity management for all your apps, users & devices
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Open Source User Authentication - An Alternative to Auth0 / Firebase Auth / AWS Cognito
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