
Codewars
Exercism
LeetCode
CodinGame
CodeCombat
HackerRank
Google's Python Class
CheckIO is a web site with a mission: To teach JavaScript and Python coding skills through a game-playing interface. It is designed to teach new skills or improve existing skills through completing challenges.

CloudShell
GitHub Codespaces
CodeTasty
StackHive
CodeAbbey
Atheos IDE
Dirigible
Slingcode is a simple yet robust personal computing platform stacked in one HTML file.

Which is more popular?
Based on our record, CheckIO seems to be a lot more popular than Slingcode. While we know about 46 links to CheckIO, we've tracked only 1 mention of Slingcode.
Website, pricing, platforms and company facts side by side.
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| Website | checkio.org | slingcode.net |
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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 Slingcode yet.
Walkthroughs and reviews on video.
Intro Video. How to get maximum from CheckiO
Slingcode online code editor
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using CheckIO and Slingcode. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


CheckiO is a platform with coding games created for different levels of programmers, from beginners to advanced levels. Using fun and engaging methods, you can use coding games to solve challenges in TypeScript and...
CheckIO is available in English and Spanish. The platform was designed by a group of engineers and now has a number of customers all over the globe who may use it to improve their programming speed and abilities by...
Checkio is the most whimsical HackerRank alternative on this list. It’s also focused on two languages: Python and TypeScript. On this site you’ll be thrown into a gamer’s paradise that includes robot mollusks and...
We have no reviews of Slingcode yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Have you heard of CheckIO (https://checkio.org/)? They have a gameified "Mario world" of coding challenges that are smaller and come with more explanation, tests to guide you through edge cases and provide hints. The challenges start... Source: almost 3 years ago
Cyber isn't gonna be a light switch, where you can flip it and be good. Don't be too hard on yourself. Start with some hands on stuff like https://tryhackme.com or checkio.org. You could look at certs like Security+ or CySA+ for some... Source: about 3 years ago
Much better to get your hands dirty than watching the videos. Try: https://checkio.org/. Source: over 3 years ago
I'm surprised nobody mentioned slingcode: https://slingcode.net/ By far the coolest single file web app I've seen. - Source: Hacker News / about 1 year ago
When comparing CheckIO and Slingcode, you can also consider the following products.


Cloud Shell is a free admin machine with browser-based command-line access for managing your infrastructure and applications on Google Cloud Platform.
Compare CloudShell to CheckIO or Slingcode:

Download and solve practice problems in over 30 different languages.
Compare Exercism to CheckIO or Slingcode:

GItHub Codespaces is a hosted remote coding environment by GitHub based on Visual Studio Codespaces integrated directly for GitHub.
Compare GitHub Codespaces to CheckIO or Slingcode:

Practice and level up your development skills and prepare for technical interviews.
Compare LeetCode to CheckIO or Slingcode:

CodeTasty is a programming platform for developers in the cloud.
Compare CodeTasty to CheckIO or Slingcode: