
Codecademy
Exercism
Treehouse
LeetCode
edX
Coursera
Udemy
Achieve code mastery through challenge.

IcePanel
PlantUML
Excalidraw
Mermaid
Productivity Power Tools
SequenceDiagram.org
Graphviz
The C4 model for visualising software architecture. Context, Containers, Components, and Code.

Which is more popular?
Based on our record, Codewars should be more popular than C4 model. It has been mentioned 160 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codewars.com | c4model.com |
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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
Codewars is recommended for beginner to advanced programmers who enjoy learning through practice and are interested in improving their algorithmic thinking and coding skills in a gamified environment. It is particularly beneficial for those preparing for coding interviews or seeking to reinforce their programming knowledge in a fun and interactive way.
No analysis of C4 model yet.
Walkthroughs and reviews on video.
Codewars Review & Tips
More videos
Visualising software architecture with the C4 model - Simon Brown, Agile on the Beach 2019
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Codewars and C4 model. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Edabit offers a learning experience similar to learning a new language, focusing on smaller and more frequent exercises that build proficiency over time. Like Codewars, Edabit provides many challenges that increase in...
In conclusion, while Leetcode remains a valuable resource for coders, the platforms listed above offer varied approaches to learning and improving coding skills. Whether you're drawn to the gamified learning...
This LeetCode alternative has excellent features for anyone looking to sharpen their coding skills. Codewars uses kata, which are small coding exercises that are community developed to help you master your language of...
The C4 model is derived from physical maps: You can look at a location from a high level, like a country, and see your city in the context of other cities and countries. Then you can zoom in to a city level and see...
Recommendations tracked on public social media and blogs since March 2021.


Recently, I was working on a coding kata on codewars.com. Early on, I started thinking that a potential solution might utilize recursion, a concept that involves a function calling itself. However, I quickly realized that my grasp of... - Source: dev.to / almost 3 years ago
Get more involved. Look into internships and junior SWE positions to get a sample of what you'd be applying for once you graduate. Solve coding challenges, start working on a portfolio of your personal works. I recommend codewars.com for... Source: almost 3 years ago
I'd recommend to play around with some basic coding challenges on leetcode.com or codewars.com. If the course prepared you well you won't find this useful, but playing around with them will make sure that you are comfortable with basics... Source: about 3 years ago
When I developed Grotto, the runtime reference implementation for the Neander language (for more details read my related blog post series), I took the liberty, as a certified software architect, of first creating a full-blown arc42... - Source: dev.to / 11 days ago
The C4 model gives software teams a hierarchy for visualizing a system: context, containers, components, and code. It works like a map with zoom levels. At the widest view, we see the system, its users, and neighboring systems. Zooming... - Source: dev.to / about 1 month ago
C4[1]? Hadn’t heard of it until now. Thanks! Really curious what the major differences are that have you preferring it over other methods / winging it. [1]: https://c4model.com/. - Source: Hacker News / about 2 months ago
When comparing Codewars and C4 model, you can also consider the following products.

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.
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Collaborative modelling and diagramming tool based on the C4 model. Software architecture design made fun! 🧊
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Download and solve practice problems in over 30 different languages.
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PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
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Treehouse is an award-winning online platform that teaches people how to code.
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Excalidraw is a whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them.
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