
Coursera
Free Code Camp
Udemy
Khan Academy
edX
Pluralsight
Treehouse
Learn the technical skills you need for the job you want. As leaders in online education and learning to code, we’ve taught over 45 million people using a tested curriculum and an interactive learning environment.

Udemy
TryHackMe
Hack The Box
Cybrary
Cohackers
ControlScan Security Awareness Training services
Coursera
Free hands-on security training: lock picking, RFID, Hak5, Flipper Zero and IoT hardware courses, plus a non-exclusive marketplace where instructors keep 75 to 90% of sales.

Which is more popular?
Based on our record, Codecademy seems to be more popular. It has been mentioned 113 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codecademy.com | onlysecurity.com |
| Pricing | ||
| Company | Startup from the United States | Startup from the United Kingdom · 1 - 9 employees · 2024 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Codecademy yet.
OnlySecurity is a practical security training platform built around four things: compete, train, learn and share. For learners - Take hands-on courses in offensive, defensive and physical security, taught by working practitioners and by the companies that make the hardware. Topics include lock...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of OnlySecurity yet.
Walkthroughs and reviews on video.
Should You Sign Up For CodeCademy?!
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How to become a trainer on OnlySecurity.com and build your first course
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Codecademy and OnlySecurity.
OnlySecurity's answer:
It specialises in hands-on hardware and physical security (locks, RFID, Flipper Zero, Hak5, IoT radio), which most training platforms barely cover, and many of its courses are taught by the companies that make the tools.
OnlySecurity's answer:
Learners can start for free and learn skills they can show, through badges, a leaderboard and a portfolio recruiters can verify. Trainers get a non-exclusive licence and keep 75% to 90% of net sales with processing fees absorbed, where larger marketplaces can pay instructors far less after fees.
OnlySecurity's answer:
Penetration testers, red teamers, physical security assessors, RFID and IoT researchers, and hobbyists learning hardware hacking, plus security practitioners who want to teach and earn from their own courses.
OnlySecurity's answer:
OnlySecurity grew out of KSEC, a UK supplier of security research hardware. Customers kept asking how to get the most out of tools like the Proxmark, Flipper Zero and Hak5 gear, so KSEC started building practical courses alongside the hardware. That became an open platform where practitioners and hardware vendors teach, and where learners compete, train, learn and share.
Share your experience with using Codecademy and OnlySecurity. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Codecademy emphasizes programming and helps users understand coding with hands-on practical projects. It is a beginner-friendly platform offering 15 programming languages in more than 20 categories. Codecademy...
Comparing all the features, pros, cons, and pricing of these Treehouse alternatives, Codecademy turns out to be ideal for coding learners. This online platform offers courses for beginners, intermediates, and advanced...
Community support: Students at Code Academy are part of a tight-knit community where they may interact with instructors, classmates, and subject matter experts alike.
We have no reviews of OnlySecurity yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


However, a little research was enough to dispel that misconception. Yes, there was a technical aspect to programming, but most developers weren't doing complex calculations all the time. So, my preconceptions faded away and turned into... - Source: dev.to / over 2 years ago
Codecademy is a freemium platform with high-quality content. Their courses range from web development to data science, and are interactive and text-based. - Source: dev.to / over 2 years ago
If you really have decided to become the next Guru on Scratch then you should learn at least one real programming language like JavaScript. I found this JavaScript course very useful: https://learnjavascript.online/. You can also learn... - Source: dev.to / about 3 years ago
Tracking OnlySecurity since Oct 2026.
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