
HackerRank
Codewars
LeetCode
CodeSignal
Exercism
Codility
CheckIO
CodinGame provides users with a fun and effective way to learn coding that eschews the rigid structure of traditional teaching methods.

HackerRank
LeetCode
CodeSignal
Coderbyte
Codewars
Project Euler
Topcoder
Sphere Online Judge created for the coders' community to train, to learn and to make progress.

Which is more popular?
Based on our record, CodinGame seems to be a lot more popular than Spoj. While we know about 45 links to CodinGame, we've tracked only 2 mentions of Spoj.
Website, pricing, platforms and company facts side by side.
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| Website | codingame.com | spoj.com |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
Walkthroughs and reviews on video.
What is CodinGame??!
More videos
WHY SPHERE ONLINE JUDGE (SPOJ) IS GREAT
How often each product is chosen within a category, 0–100% relative to the other.


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


CodinGame is an online platform that offers coding challenges and puzzles to improve programming skills. It provides a wide range of programming tasks in various languages, allowing users to practice and enhance their...
Instead of just completing coding problems in an editor, CodinGame allows you to participate in creating the code for video games that you can play immediately online. Here’s a list of the games that are presently...
CodinGame is a bit different from the other websites, because instead of simply solving coding challenges in an editor, you actually take part in writing the code for games that you play directly online. You can see a...
Sphere Online Judge (SPOJ) is an online judge that provides over 20k coding challenges. You are able to submit your code in an online editor. SPOJ also hosts their own contests and has an area for users to discuss...
Best qualities: SPOJ has tons of mind-boggling coding challenges that will really test your skills. There are contests as well for you to participate in to showcase your skills.
Recommendations tracked on public social media and blogs since March 2021.


Are you sure, I got a link to a codingame.com assessment from block. Source: over 3 years ago
This, and OP should practice handling the stress. Find a friend to do interviews with, or give yourself a timer, or whatever. codingame.com is a good alternative if you want to try dealing with a timer and don't want to be able to cheat. Source: over 3 years ago
Just jumped to codingame.com and start (cant) solving puzzles. Source: over 3 years ago
Before Timsort, I knew of Tim some 20 years ago from the ranking and online forum of SPOJ[1], a Polish competitive programming website where he always seemed to top the speed leaderboards with unorthodox usage of Python. He's... - Source: Hacker News / about 2 years ago
Have you looked at spoj.com? It has a fair amount of different problems, some of them are pretty creative, you can take an inspiration from that. Source: over 5 years ago
When comparing CodinGame and Spoj, you can also consider the following products.

HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
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Practice and level up your development skills and prepare for technical interviews.
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CodeSignal is the leading assessment platform for technical hiring.
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Coderbyte is a place built for anyone to practice and perfect their programming skills.
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Download and solve practice problems in over 30 different languages.
Compare Exercism to CodinGame or Spoj: