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Nab that sold-out campsite!

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, Campnab seems to be a lot more popular than Cert Decoder. While we know about 15 links to Campnab, we've tracked only 1 mention of Cert Decoder.
Website, pricing, platforms and company facts side by side.
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| Website | campnab.com | certdecoder.com |
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| Company | 2017 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Popular campgrounds open for reservations months in advance—and sell out in minutes. But many of those campsite reservations get canceled. So, we built an app that scans sold-out parks for new availabilities and sends notifications about them. Since we did, we’ve helped campers all over North...
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 Campnab yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
How to Create Campsite Availability Alerts
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Campnab and Cert Decoder.
Campnab's answer
Campnab scans sold-out state, provincial, national, and some county parks for cancelled campsite reservations and permits. When it spots an opening that matches your requirements, it sends a text message to you about the new availability.
Campnab's answer
We monitor parks throughout the US and Canada—and can check for backcountry availabilities in a number of these parks. Using Campnab is super-easy as we’ve put so much effort into making the interface clean and intuitive. Plus, it has all kinds of useful features (for example: the ability to scan only for specific campsites). Meanwhile, if you ever run into an issue, one of us will help resolve it one-on-one. Members tend to be pleased that a real human is ready to lend a hand when needed.
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.
Campnab's answer
A lot of seasonal campers use Campnab throughout the spring, summer, and early fall. That said, we also do see a number of full-time RVers sign up for annual plans, as they need to be able to find campsite reservations year-round. We also find that some fair-weather campers use our pay-per-use scans once or twice a year.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Campnab's answer
Eric and Kim bought a campervan, but couldn’t find a place to camp as every park was sold-out. This led Kim to spend hours hitting Refresh on the parks’ booking site in hopes of finding an availability. Eric figured he could automate the process to save Kim some time—and realized that others might also like this sort of service. So, he and his friend (also named Eric) released the product publicly. Since then, Campnab has become our full-time job, as we work to keep the system running well, add new features, and introduce scanning for additional regions.
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.
Share your experience with using Campnab and Cert Decoder. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


We have been using Campnab for the most popular camping destinations around the country and have had 100% success in finding not only a campsite, but the specific waterfront campsites we always seek out. I highly...
I've used Campnab twice and was able to secure great campsites in my desired location both times. Both were for very busy weekends and I wouldn't have been able to snag a campsite otherwise. Love this service so much!
I recommend this app to anyone that likes camping and will definitely use it in the future. I was interested in camping in Canyonlands National Park, UT, but it was solid booked at least 6 months in advance. Though a...
We have no reviews of Cert Decoder yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Campnab is a must have for the RVers/campsers I know. https://campnab.com/. - Source: Hacker News / about 3 years ago
We use an app called CampNab. There's a monthly fee but we've used it the past few years with a lot of success. Basically alerts you when a site opens up (cancelled reservations). Source: over 3 years ago
There is also a cool website you can pay for that will notify you. https://campnab.com/. 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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