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Free online developer tools for JSON formatting, JWT decoding, timestamp conversion, regex testing and more. Fast, privacy-friendly and browser-based.

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Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.

Which is more popular?
Based on our record, Codility seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | devtoo.dev | codility.com |
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In their own words, as submitted to SaaSHub.


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,...
The Codility platform includes: CodeCheck - Design role-specific remote skills assessments to screen your technical candidates before moving them to the interview stage. CodeLive - Host technical remote or onsite interviews via our shared editor using a range of templates and whiteboards....
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 Codility yet.
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An Introduction to Codility: The Tech Hiring Platform for Engineering Teams
How often each product is chosen within a category, 0–100% relative to the other.


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External articles and on-site reviews we used to compare the two products.


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Codility is a platform that helps companies assess the coding skills of developers. They offer a range of online coding tests and assessments that enable employers to evaluate candidates' technical abilities.
Recommendations tracked on public social media and blogs since March 2021.


Tracking DevToo.dev since Jun 2026.
- Technical skills: have they got the walk to match the talk? Programming languages on a resume mean little if candidates are unable to demonstrate their hard coding skills. You can test these skills with technical skill tests, such as... - Source: dev.to / over 2 years ago
Codility : Verify and improve coding skills. - Source: dev.to / over 5 years ago
When comparing DevToo.dev and Codility, you can also consider the following products.

Fast, private developer tools in your browser. JSON formatter, Regex tester, Cron generator, and 17 more.
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HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
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The JSON Formatter can be used to convert JSON to one line or format it using a specified level of indentation.
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CodeSignal is the leading assessment platform for technical hiring.
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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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