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Apache Pulsar is an open-source, distributed messaging and streaming platform built for the cloud.

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, Apache Pulsar should be more popular than Cert Decoder. It has been mentioned 6 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | pulsar.apache.org | certdecoder.com |
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In their own words, as submitted to SaaSHub.


No description of Apache Pulsar 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.


No analysis of Apache Pulsar yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Introduction to Apache Pulsar Basics
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Apache Pulsar 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 Apache Pulsar 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.


Pulsar also provides a rich set of client libraries for various programming languages, making it easy to build messaging and streaming applications using Pulsar. Apache Pulsar is a popular choice for real-time data...
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Recommendations tracked on public social media and blogs since March 2021.


Performance Benchmarks: Pulsar vs Kafka, ClickHouse Performance. - Source: dev.to / 11 months ago
Northguard doesn’t look like it’s been open sourced? I’d be curious to know how it compares to Apache Pulsar [0]. I feel like I see some similarities reading the LI blog post. 0: https://pulsar.apache.org/. - Source: Hacker News / about 1 year ago
Ingest real-time data from Kafka, Pulsar, or CDC sources like Postgresand MySQL, with built-in support for Debezium. - Source: dev.to / over 1 year 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 Apache Pulsar and Cert Decoder, you can also consider the following products.

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Flink is a streaming dataflow engine that provides data distribution, communication, and fault tolerance for distributed computations.
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Apache ActiveMQ is an open source messaging and integration patterns server.
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