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Microsoft Outlook
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Evolution
K-9 Mail
eM Client
Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response

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, Claws Mail should be more popular than Cert Decoder. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | claws-mail.org | certdecoder.com |
| Pricing | — | |
| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Claws Mail 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
Claws Mail is recommended for individuals who use older hardware or operating systems, Linux users, and those who appreciate a minimalist design with customizable features. It is also ideal for users who need a reliable email client that prioritizes speed and stability over advanced visual design and integrated features.
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 Claws Mail 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 Claws Mail 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.


Seamonkey or claws mifht be good alternatives too. http://seamonkey-project.org/ https://claws-mail.org/. - Source: Hacker News / 5 months ago
> However, on more practical level, what are other options? Outlook, the desktop application works really well with local copies, is pretty low bandwidth and very familiar to end users. Claws-mail (https://claws-mail.org) has a good... - Source: Hacker News / 5 months ago
Talons[1] is my stripped down fork of claws-mail[2] which itself is a fork of Sylpheed[3]. Moving from auto tools to Zig’s build system was a huge quality of life improvement. Most of the work since has been deleting features and tidying... - Source: Hacker News / 8 months 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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