AstroGrid
Sifter
Three.js
The Pudding
Observable
Neal.fun
Vizzu
Find out how fast you are spinning — from your latitude

Scrimba
Data Protocol
GoIT LMS
Codelita
CodeCrafters
Codecademy
Divize
The most fun way to learn to code.

Which is more popular?
Based on our record, Codédex seems to be more popular. It has been mentioned 5 times since March 2021.
Website, pricing, platforms and company facts side by side.
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SL
SiderealLab
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|---|---|---|
| Website | sidereallab.streamlit.app | codedex.io |
| Pricing | — | |
| 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
No analysis of Codédex yet.
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using SiderealLab and Codédex. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking SiderealLab since May 2025.
I'm a new coder too. What helps me is finding a good place to learn the most basic principles and having 2-5 things I want to do. I started with codedex.io , learning Python and HTML and then took their courses and moved on looking for... Source: over 3 years ago
I think you should focus on HTML, CSS, and JS, starting with HTML. I just started HTML on a website called codedex.io. Pretty cool so far but I feel like I'm getting into a brand new thing haha. Source: over 3 years ago
I've been learning Python on a website called codedex.io for about 6 months. It's been great for me so far. I just started on Classes and Objects. Give them a try, you might like them. Source: over 3 years ago
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