
NextDNS
RethinkDNS
Pi-hole
AdGuard DNS
SpyBuster
1.1.1.1
Tunnello VPN
Bypass geo-restrictions, block tracking, and be more productive.

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, ControlD seems to be a lot more popular than Cert Decoder. While we know about 94 links to ControlD, we've tracked only 1 mention of Cert Decoder.
Website, pricing, platforms and company facts side by side.
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| Website | controld.com | certdecoder.com |
| Pricing | — | |
| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of ControlD 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
ControlD is recommended for individuals who prioritize online privacy and security, families wanting to manage internet content access, and users who are interested in ad-blocking features. It is also suitable for those who wish to bypass geo-blocks to access content from different regions.
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 ControlD 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 ControlD 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.


Thinkpad 431s if you are on a low budget. It's the best performing cheap option, IMO. Obviously block access to internet nonsense. I just started using ControlD.com and it works like a charm. Or, if you have the time, make the PiHole and... - Source: Hacker News / about 2 years ago
I've tried hosted Pi-Hole and AdGuard Home. They are good as long as I'm around to fix stuffs. Then I tested something which can be global (home) and also for individual devices -- Control-D, NextDNS, and Adguard DNS. All of them works... - Source: Hacker News / over 2 years ago
I used Pi-Hole, then went to NextDNS, then to AdGuard DNS, tinkered with AdGuard Home, and currently testing Control-D. They are all actually pretty good, similar features, and it has become just a matter of personal choice. In all... - 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 ControlD and Cert Decoder, you can also consider the following products.

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Pi-hole is a multi-platform, network-wide ad blocker.
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Soon you'll be able to create your own private DNS server that will protect your personal data, block ads and trackers, and allow you to control access to specific Internet content.
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SpyBuster is a free anti-spyware tool for macOS that helps to secure user data by detecting apps and websites that originate from or connect to servers in russia and belarus.
Compare SpyBuster to ControlD or Cert Decoder:
