
Decision Mentor
Rationale
Big Decisions
Decisionize
Decision support for hard choices. Hemelion separates facts, assumptions, preferences, and unknowns; makes trade-offs visible; tests where a conclusion is fragile; and turns uncertainty into a small, reversible next step.
VS Code
CodePen
GitHub
Node.js
RegExr
JSFiddle
CodeSandbox
Free ebook for the JS Beginners

Which is more popular?
Based on our record, Eloquent JavaScript seems to be more popular. It has been mentioned 218 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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Eloquent JavaScript A Modern Introduction to Programming 3rd Edition by Marijn Haverbeke review
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Share your experience with using Hemelion and Eloquent JavaScript. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking Hemelion since Jul 2026.
If you haven’t read Eloquent JavaScript , go check it out. It’s one of my all-time favourite programming books — hands down. - Source: dev.to / about 1 year ago
Videos, blogs, text-based teachings, YouTube project-based learning, books, and the like are all examples of various methods and mediums of acquiring skills, especially in the software engineering industry. As I continue to navigate... - Source: dev.to / almost 2 years ago
Seconded. I won't recommend it and no one I know has recommended it for a decade. It's hard for someone who doesn't know JS to know which parts has changed and is no longer the way to do things. https://github.com/getify/You-Dont-Know-JS... - Source: Hacker News / about 2 years ago
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Rationale let's you create, online, argument maps.
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An app that helps you make better decisions
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Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
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