
Telegram
Signal
WhatsApp
Element.io
Tox
Wire
Slack
A secure, end-to-end encrypted Swiss instant messenger with a focus on privacy.

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, Threema seems to be a lot more popular than Cert Decoder. While we know about 22 links to Threema, we've tracked only 1 mention of Cert Decoder.
Website, pricing, platforms and company facts side by side.
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| Website | threema.com | certdecoder.com |
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| Listed in |
In their own words, as submitted to SaaSHub.


No description of Threema 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.


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 Threema 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 Threema 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.


Threema similar to Telegram does not require any sort of mobile number or email for registration of user, every person will be allotted a unique ID which is known as Threema’s ID. Threema gives room for private chats...
The application developers further assert that when a communication is transmitted, it instantly gets deleted from their servers. Threema joined the list of secure mobile messaging apps, given that the emphasis on...
Threema itself is based in Switzerland, which is known for its strong privacy laws, but it hasn't really caught on in other countries. The lack of name recognition and the $3 pricetag might make it hard to convince...
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.


This is the Threema business model: https://threema.com/en Public app, and a separate business offering - both with E2EE. - Source: Hacker News / about 1 year ago
Threema - Highly secure messaging app. - Source: dev.to / over 1 year ago
No one time $5. It's extremely secure. Here is the info https://threema.ch/en. Source: about 3 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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