
HackerRank
Codility
LeetCode
HackerEarth
Coderbyte
DevSkiller
iMocha
CodeSignal is the leading assessment platform for technical hiring.
prism.js
highlight.js
Bright
Inkjet (Syntax Highlighting)
Shiki
starry-night
Re-Highlight
Torchlight is a VS Code-compatible syntax highlighter that requires no JavaScript, supports every language, every VS Code theme, line highlighting, git diffing, and more.

Which is more popular?
Based on our record, CodeSignal seems to be more popular. It has been mentioned 27 times since March 2021.
Website, pricing, platforms and company facts side by side.
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What each product offers, as listed by its team.

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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using CodeSignal and Torchlight.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.

CodeSignal is a technical interview and assessment solution that helps organizations identify quality candidates quickly. Our platform allows recruiters and hiring managers to design consistent and well-researched...
What are LeetCode and LeetCode alternatives good for?LeetCode💡Interested in leveling up your career? Apply to the Formation Fellowship...
CodeSignal is renowned for its standardized coding assessments and a robust IDE. It's an excellent platform for interview preparation and improving coding skills through timed challenges.
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Recommendations tracked on public social media and blogs since March 2021.

Mention tools like Slack, Zoom, GitHub Highlight remote work experience or team collaboration Link to your portfolio and GitHub Prepare for video interviews and live coding sessions (HackerRank, CodeSignal, etc.). - Source: dev.to / about 1 year ago
When I started, I programmed many different things in different languages. Then, I found a job as a Junior Java Developer and solved tasks on CodeSignal every day. - Source: dev.to / over 1 year ago
Platforms like HackerRank and CodeSignal host challenges that not only hone your skills but also can put you on the radar of tech companies looking for talent. - Source: dev.to / over 2 years ago
Tracking Torchlight.dev since May 2025.
When comparing CodeSignal and Torchlight.dev, 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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Prism is a lightweight, extensible syntax highlighter, built with modern web standards in mind.
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Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.
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Highlight.js is a syntax highlighter written in JavaScript. It works in the browser as well as on the server.
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Practice and level up your development skills and prepare for technical interviews.
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React Server Component for syntax highlighting.
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