
Codewars
Exercism
CodinGame
LeetCode
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.

Zeal
Dash for macOS
DASH
Devhints
CSS-Tricks
Velocity
CodePen
Open source API documentation browser with instant fuzzy search, offline mode, keyboard shortcuts, and more

Which is more popular?
Based on our record, DevDocs should be more popular than CheckIO. It has been mentioned 132 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | checkio.org | devdocs.io |
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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
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Intro Video. How to get maximum from CheckiO
DevDocs - An API Documentation Browser
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using CheckIO and DevDocs. 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 DevDocs 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
DevDocs (open source, free) is a local offline documentation viewer. There is a hosted version that can be used offline in a web browser. - Source: dev.to / 4 months ago
This isn't a new idea for developer tools. DevDocs, Zeal, and Dash have offered offline documentation browsing for years. What's new is applying this architecture to AI agents — giving your coding assistant the same offline, instant,... - Source: dev.to / 7 months ago
DevDocs the minimalist doc reader for when Stack Overflow doesn’t have the answer. - Source: dev.to / about 1 year ago
When comparing CheckIO and DevDocs, you can also consider the following products.


A free, open-source offline documentation browser that puts documentation for every major language and framework one instant search away, on Linux and Windows.
Compare Zeal to CheckIO or DevDocs:

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

Dash is an API Documentation Browser and Code Snippet Manager. Dash searches offline documentation of 200+ APIs and stores snippets of code. You can also generate your own documentation sets.
Compare Dash for macOS to CheckIO or DevDocs:

CodinGame provides users with a fun and effective way to learn coding that eschews the rigid structure of traditional teaching methods.
Compare CodinGame to CheckIO or DevDocs:

DASH is a secure, blockchain-based global financial network which offers private transactions.
Compare DASH to CheckIO or DevDocs: