
Apiary
API MAKER
APIs With GitHub
JustAPIs
Turn your data into an API in 10 minutes.

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, Cert Decoder seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | simpledataapi.com | certdecoder.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United States · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Why you'll love it: -Keep content control with non-technical teams while giving developers a stable endpoint they can depend on in production. -Non-technical teams who still need reliable live API updates for screens, campaigns, and product details without waiting on engineering sprint cycles....
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.


Overall verdict
Why this product is good
Recommended for
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 Simple Data API and Cert Decoder.
Simple Data API's answer
As a webdev, I've built a lot of websites that were bloated with databases and content management just to update a few lines of text a few times a week. This solution give developers and easy to access dynamic endpoint, and keeps the client in control of their structured data in an easy to update form.
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.
Simple Data API's answer
next.js, typescript
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
Simple Data API's answer
The primary user is either A.) a non-technical person who needs to ship structured data to their webapp, page, or online tool. Or, B.) a web developer who doesn't need to develop a full CMS solution for a small amount of custom, frequently changing client data.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Simple Data API's answer
Easy to get started in minutes. Inexpensive and easy tool for the freelance toolkit. Client friendly, easy to edit, easy to share.
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.
Simple Data API's answer
specifically build for non technical users to control the frequency of their data and updates. Helps developers focus on the project, not the data.
Share your experience with using Simple Data API 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.


Tracking Simple Data API since May 2026.
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 Simple Data API and Cert Decoder, you can also consider the following products.

Collaborative design, instant API mock, generated documentation, integrated code samples, debugging and automated testing
Compare Apiary to Simple Data API or Cert Decoder:

Create your API in minutes with Notion
Compare API MAKER to Simple Data API or Cert Decoder:
Create simple JSON APIs with GitHub Repository
Compare APIs With GitHub to Simple Data API or Cert Decoder:
