
BuiltWith
WhatRuns
Similar Tech
What CMS
PublicWWW
Fork.ai
W3Techs
Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.

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, Wappalyzer should be more popular than Cert Decoder. It has been mentioned 4 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | wappalyzer.com | certdecoder.com |
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| Company | Startup from Australia | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Sell and market more effectively with technographic insights. Wappalyzer tracks over a thousand technologies across websites of millions of companies to help you to identify new prospects and increase your addressable market.
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
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Wappalyzer 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 Wappalyzer and Cert Decoder. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Data from Wappalyzer is often sourced from browser extensions and in-house crawlers. This only means it has more sample size to track live websites and measure traffic. This method helps you scan pages that crawlers...
I once said, “how someone can create such an outstanding website” after seeing a site. I wanted to know the framework they had used. I was curious. I used Wappalyzer, and it revealed their CMS type, marketing tools,...
We have no reviews of Cert Decoder yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


I want to replicate something like this. I've tried https://whatcms.org https://bundlescanner.com https://builtwith.com https://wappalyzer.com to learn. It looks like Jquery Ui to me. Can someone help me please? Source: about 3 years ago
You can use https://wappalyzer.com to check what technology the website use. Source: over 3 years ago
The next and final thing to add is the tech stack of the portfolio website. You can use wappalyzer, or any other service you know to detect the stack. - Source: dev.to / over 4 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
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WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.
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Fork AI - Find out the technology stack of any Mobile Apps from Google Play & App Store.
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