
Codecademy
edX
Treehouse
Hackr.io
Free Code Camp
Pantheon
Pluralsight
Download and solve practice problems in over 30 different languages.

CodeUtil.dev
Text-Utils JSON Formatter
150+ Developer Tools
CodifyFormatter.org
DevTool.io
DevToys
JSONFormatter.org
Free online developer tools for JSON formatting, JWT decoding, timestamp conversion, regex testing and more. Fast, privacy-friendly and browser-based.
Which is more popular?
Based on our record, Exercism seems to be more popular. It has been mentioned 318 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | exercism.org | devtoo.dev |
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In their own words, as submitted to SaaSHub.


No description of Exercism yet.
DevToo is a free collection of 67 browser-based developer tools for everyday engineering tasks — no ads, no sign-up, and no uploads. It brings together utilities across data, encoding and security, code, networking, and DevOps, including a JSON formatter and validator, JWT decoder, regex tester,...
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.
How often each product is chosen within a category, 0–100% relative to the other.


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


What are LeetCode and LeetCode alternatives good for?LeetCode💡Interested in leveling up your career? Apply to the Formation Fellowship...
Exercism is the alternative to LeetCode learning platform, with over 4000 activities in up to 52 popular programming languages. It is very different from other comparable programming websites in that it emphasizes...
Exercism is a coding challenge website that offers 3100+ challenges spanning 52 different programming languages. After picking a language that you'd like to master, you tackle the coding challenges right on your...
We have no reviews of DevToo.dev yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Exercism.org structured deliberate practice, no AI required. - Source: dev.to / 5 months ago
Providing free coding exercises and mentorship, Exercism helps developers practice and improve their programming skills step by step. Their Python Track offers a series of exercises that guide learners from beginner to more advanced levels. - Source: dev.to / 8 months ago
Exercism is a code practice + mentoring platform in 74 languages. Why it can work: although it is not exclusively focused on groups of five, its mentoring and peer review model allows forming mini-circles where participants give each... - Source: dev.to / 10 months ago
Tracking DevToo.dev since Jun 2026.
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Fast, private developer tools in your browser. JSON formatter, Regex tester, Cron generator, and 17 more.
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Treehouse is an award-winning online platform that teaches people how to code.
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Here are some of the amazing tools/resources that will make your life a lot more easier save many hours of research!Perks:-⭐ Save 100+ hours⭐ Detailed description of every tool + Link⭐ Life-Time AccessEnjoy exploring these tools/resources!
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