
Coursera
Free Code Camp
Udemy
edX
Khan Academy
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.

NextDNS
1.1.1.1
OpenDNS
OpenNIC
AdGuard DNS
Cisco Umbrella
MullvadDNS
Quad9 is a free, recursive, anycast DNS platform that provides end users robust security protections, high-performance, and privacy.

Which is more popular?
Based on our record, Codecademy should be more popular than Quad9. 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 | quad9.net |
| Pricing | — | |
| Company | Startup from the United States | — |
| Listed in |
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
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Should You Sign Up For CodeCademy?!
More videos
Quad9 9.9.9.9 VS Google 8.8.8.8 Benchmark Testing & Keeping Your Computer safer with Quad9 DNS
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Codecademy and Quad9. 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.
The company sells itself on its ability to block malicious domains by collecting intelligence from 'a variety of public and private sources.' It's not clear what these sources are, but the website says Quad9 used 18+...
As the name Quad9 suggests, their primary DNS is 9.9.9.9. Quad9’s DNS is fairly easy to remember as the name indicates. Quad9 focuses on security, performance, privacy, and speed. Though it may not be the fastest DNS,...
Quad9 emphasizes security, privacy and performance — the company was founded on the goal to make the internet safer for everyone. It blocks malicious domains, phishing and malware while maintaining your anonymity....
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
So assuming the answer to a query of what something like dev.to is mainly starts at the locally designated DNS servers. This will most likely be your ISP but it's not uncommon to utilize public DNS servers such as Quad9, Google, and... - Source: dev.to / 5 months ago
Maybe consider using https://quad9.net for DNS? It's nice having archive.today work. Otherwise you can always copy/paste the link to TFA into https://archive.org. - Source: Hacker News / about 2 years ago
Automate everything. Use a password manager, enable automatic updates, use DNS malware filtering at router level (Free with https://quad9.net ). Source: almost 3 years ago
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