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Prospecting, like a boss. Find any email, reach out, measure everything and integrate with your CRM.

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, Prospect.io should be more popular than Cert Decoder. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | prospect.io | certdecoder.com |
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| Platforms | — | |
| Company | Startup from the United States | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Cut down your time spent on prospecting by 75% by automating the tedious aspects of the job. Find any email address In just 2 clicks, capture email addresses on professional social networks, company websites or from anywhere on the internet based on the first name, last name and company name of...
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
Prospect.io is recommended for small to medium-sized businesses, sales professionals, marketers, and agencies looking for a comprehensive tool to manage their outreach operations efficiently. It is particularly beneficial for teams that require integrated solutions for lead generation and customer relationship management.
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 Prospect.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 Prospect.io 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.


I used Prospect.io for more than 1 year now and it really helps me increase my productivity.
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.


There are also tools you can pay for to do this as well. I used to use prospect.io which is now overloop. They can be super useful and even get a full list of emails for an entire domain. Source: over 4 years ago
More than five years ago, trying to contact potential clients via their email addresses was the option that assisted businesses in growing. However, sending partnership presentations using emails has become obsolete. Successful startups... - Source: dev.to / over 5 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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