
Supabase
Auth0
Next.js
Clerk
Clerk Authentication
Simple OTP
SuperTokens
Authentication for the Web.

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, Auth.js seems to be a lot more popular than Cert Decoder. While we know about 28 links to Auth.js, we've tracked only 1 mention of Cert Decoder.
Website, pricing, platforms and company facts side by side.
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| Website | authjs.dev | certdecoder.com |
| Pricing | ||
| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Auth.js yet.
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
Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of Auth.js yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Clerk vs Next-Auth.js | It's not that simple...
No Cert Decoder videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Auth.js 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 Auth.js 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.


I use libraries for authentication rather than building it myself. For Memoreru, I chose Better Auth. Auth.js is also an option. - Source: dev.to / 9 months ago
Home page | GitHub Repo | Documentation | Discord community. - Source: dev.to / over 1 year ago
Auth.js is an open-source authentication library that integrates with modern JavaScript frameworks like Next.js, Svelte, and Express. Previously the project was available only for Next.js and thus it used to be called Next-Auth. Today, a... - Source: dev.to / over 1 year 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
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Simple passwordless authentication for your website. Source code included.
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