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A powerful writing tool for Mac, iPad, and iPhone

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, Ulysses.app seems to be a lot more popular than Cert Decoder. While we know about 23 links to Ulysses.app, we've tracked only 1 mention of Cert Decoder.
Website, pricing, platforms and company facts side by side.
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| Website | ulysses.app | certdecoder.com |
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| Listed in |
In their own words, as submitted to SaaSHub.


No description of Ulysses.app 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
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Ulysses.app 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 Ulysses.app 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.


Write with confidence: Ulysses’ built-in grammar and style check helps you avoid mistakes and meet the right tone. Available for over 20 languages, it offers suggestions for capitalization, punctuation, semantics,...
iA Writer is often compared to Ulysses because of its similarities in features such as the Markdown for formatting, but it has a simpler interface compared to Scrivener and Ulysses.
No direct import from Scrivener: Ulysses doesn’t handle Scrivener files, at least not directly. You have to export your content as MultiMarkdown files in Scrivener first, click Save, and drag the .mmd file into...
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.


While I haven’t had a need to use it, this sounds like what Ulysses[0] was built for. I saw a writer talking about it years ago, and how they liked it because it allowed them to organize and keep their research right alongside their... - Source: Hacker News / about 1 year ago
It worked nice, but I always disliked having to go from my writing tool Ulysses to a content management system, upload it, format it and publish to my website. On the contrary I didn’t really vibe with the idea of having my markdown... - Source: dev.to / over 1 year ago
Ulysses - Price: $5.99/month or $49.99/year (subscription) Writing app for Mac, iPad, and iPhone that offers a distraction-free writing environment and advanced features for writers. 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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Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.
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