
Celestia
KStars
Sky Map
Sky Guide
Solar System Scope
Space Engine
SkyView
Stellarium is a free open source planetarium for your computer.

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, Stellarium seems to be a lot more popular than Cert Decoder. While we know about 251 links to Stellarium, we've tracked only 1 mention of Cert Decoder.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | stellarium.org | certdecoder.com |
| Pricing | ||
| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Stellarium 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
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 Stellarium 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 Stellarium 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.


This is very cool, and looks like it targets you wanting to look stuff up and I will probably use it at some point. But I feel that anyone looking at this and thinking "oh that's cool" should also try installing Stellarium... - Source: Hacker News / over 2 years ago
The project website is at http://stellarium.org/. There is no need to have images inside a project repository. Every maintainer already knows what it looks like. What next? Marketing materials? - Source: Hacker News / over 2 years ago
There's even a web version linked at https://stellarium.org/. - 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
When comparing Stellarium and Cert Decoder, you can also consider the following products.



Sky Map (formerly the Google Sky Map) turns your Android-powered mobile phone into a window on the...
Compare Sky Map to Stellarium or Cert Decoder:

A window to the stars has never been more beautiful and easy to use.
Compare Sky Guide to Stellarium or Cert Decoder:

3D model of the Solar System and night sky in real time
Compare Solar System Scope to Stellarium or Cert Decoder:

Space Engine is a realistic virtual Universe you can explore on your computer.
Compare Space Engine to Stellarium or Cert Decoder: