
Fixer.io
ExchangeRate-API
Currencyapi.com
Currencylayer
Open Exchange Rates
BestExchangeRates
Freecurrencyapi.com
Simple API for Global Currency Exchange Rates

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, Exchangeratesapi.io seems to be a lot more popular than Cert Decoder. While we know about 19 links to Exchangeratesapi.io, we've tracked only 1 mention of Cert Decoder.
Website, pricing, platforms and company facts side by side.
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| Website | exchangeratesapi.io | certdecoder.com |
| Pricing | ||
| Platforms | — | |
| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


ExchangeRatesAPI.io provides reliable exchange rate and currency conversion data through an easy-to-integrate API for websites, applications, and businesses.
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.


No analysis of Exchangeratesapi.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 Exchangeratesapi.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 Exchangeratesapi.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.


Exchange Rate: Their REST API interface delivers currency exchange rate data for hundreds of currencies, allowing up to 1,000 monthly requests for free. - Source: dev.to / over 2 years ago
- Currency: I use a free tier to hourly 'cache' on the repo, latest rates based on https://exchangeratesapi.io [2] (for basic traveler's currency I find this a reasonable balance) - The landing page website [3] is made with SvelteKit,... - Source: Hacker News / over 2 years ago
Here's an API built on top of this data that allows for more fine tuned queries. https://exchangeratesapi.io/ https://github.com/exchangeratesapi/exchangeratesapi. - Source: Hacker News / almost 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
When comparing Exchangeratesapi.io and Cert Decoder, you can also consider the following products.

Fixer provides a free, simple, and lightweight API for current and historical foreign exchange rates and currency conversion. The API tracks rates published daily by the European Central Bank.
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An easy to use, free & reliable Exchange Rate API trusted by tens of thousands of developers since 2010!
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Currencyapi.com is a free, reliable & feature complete currency exchange rates API. 170+ world currencies & 60 second update rate.
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Free and startup-friendly currency converter JSON API for real-time and historical exchange rates - reliable and accurate, supporting 168 world currencies.
Compare Currencylayer to Exchangeratesapi.io or Cert Decoder:

Free, hourly-updated exchange rates - a simple, accurate, open-source JSON API. Free for personal use, a bargain for everybody else.
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Compare FX and save when you send or spend abroad
Compare BestExchangeRates to Exchangeratesapi.io or Cert Decoder: