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Browse and compare the best prepaid eSIM plans for your next trip.

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, esims.io seems to be a lot more popular than Cert Decoder. While we know about 13 links to esims.io, we've tracked only 1 mention of Cert Decoder.
Website, pricing, platforms and company facts side by side.
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| Website | esims.io | certdecoder.com |
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| Platforms | ||
| Company | 2021 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


esims.io offers a powerful yet simple experience for anyone that needs a travel eSIM : we aggregate 2500+ data plans from telecom providers in 210 countries in our seamless comparison interface. Here’s a highlight of some of Our best features so far : Find plans by country, continent,...
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 esims.io 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 esims.io 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 esims.io 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.


Just pick another service - esimdb.com or esims.io will show you the way. Source: about 3 years ago
Also check https://esimdb.com/ and / or https://esims.io/ to survey the landscape of providers. Source: about 3 years ago
I have installed, but have not used, an app called eSIMs. It is also available at https://esims.io/. They have lots of carriers and options for eSIMs around the world. The best part is that with an esim you can install it and go,... Source: over 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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