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Discover Open Source Alternatives to Popular Software

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, OpenAlternative should be more popular than Cert Decoder. It has been mentioned 6 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | openalternative.co | certdecoder.com |
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| Platforms | — | |
| Company | 2024 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


OpenAlternative is a community driven list of open source alternatives to proprietary software and applications. The goal of the site is to be your first stop when researching for a new open source service to help you grow your business. It will help you find alternatives and reviews of the...
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.


No analysis of OpenAlternative yet.
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 OpenAlternative 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 OpenAlternative 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.


i've found this site easier to use and have better results than alternativeto. https://openalternative.co/. - Source: Hacker News / 20 days ago
I dunno why someone would link to the repo, it's not a project one builds to host locally Also, for comparison: https://openalternative.co/?q=splunk https://alternativeto.net/software/splunk/?license=opensource. - Source: Hacker News / over 1 year ago
There are a few: - https://openalternative.co/ - https://www.opensourcealternative.to/ - https://opensourcealternatives.org/ - https://www.btw.so/open-source-alternatives By just aggregating everything FOSS, doesn't mean its useful. Its... - Source: Hacker News / over 2 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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