VS Code
CodePen
GitHub
Node.js
RegExr
JSFiddle
CodeSandbox
Free ebook for the JS Beginners

Clever School AI
Teach.io
AI-Tutor.ai
Create AI Course
SchoolAI
ElevateEd AI
Learnt.ai
The AI toolkit teachers actually trust. FERPA-compliant, encrypted, zero student data. Create worksheets, quizzes, lesson plans in seconds.

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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EJS
Eloquent JavaScript
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| Website | eloquentjavascript.net | teachtools.co |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from the United States · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Eloquent JavaScript yet.
TeachKit is an AI-powered teacher toolkit that generates worksheets, quizzes, crosswords, rubrics, lesson plans, and grades assignments — all with military-grade encryption and full FERPA compliance. Teachers want AI tools but can't risk student data exposure. TeachKit solves this by never...
What each product offers, as listed by its team.

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
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Walkthroughs and reviews on video.
Eloquent JavaScript A Modern Introduction to Programming 3rd Edition by Marijn Haverbeke review
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Safe AI for Teachers
How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing Eloquent JavaScript and TeachTools.
TeachTools's answer:
TeachTools is the only AI toolkit for teachers that puts student privacy first — not as a feature, but as the foundation.
🔒 FERPA-compliant by design — student data is encrypted end-to-end and never stored or sold
🧠 23+ AI-powered generators — worksheets, quizzes, lesson plans, rubrics, crosswords, bingo cards, and more
📝 Easy Grader — upload an answer key + up to 100 student papers and get every assignment graded in minutes with per-question breakdowns
🎨 Custom headers & footers — brand every document with your name, school info, and custom backgrounds so output looks like yours, not a robot's
⚡ Try before you sign up — every tool lets teachers fill out the form and preview results before creating an account
Most AI tools sell features. TeachTools sells permission to trust an AI tool in your classroom.
TeachTools's answer:
Every competitor asks teachers to make a trade: use our AI, but hand over your classroom data and hope we do the right thing. TeachTools doesn't ask.
Teachers don't need another AI toy. They need a tool they can actually use without a risk assessment from their district's IT department.
TeachTools's answer:
K-12 teachers who are drowning in prep work and desperate for help — but can't afford to compromise on student privacy.
That includes: - Classroom teachers across every subject and grade level
First-year teachers who need quality materials now, not after 10 years of building a resource library
Veteran teachers buried in grading who want their evenings back
Teachers in rural and underserved schools who deserve the same resources as well-funded districts
International educators in 15+ countries generating content in multiple languages
Instructional coaches and curriculum coordinators building materials at scale
If you've ever stayed up until midnight making a worksheet, TeachTools was built for you.
TeachTools's answer:
A first-year teacher in rural Oklahoma shouldn't have worse resources than a veteran at a Manhattan private school. But they do — because great materials take time, and time is the one thing no teacher has enough of.
TeachTools exists to fix that.
We watched teachers spend their nights and weekends building worksheets, writing quizzes, and grading stacks of papers by hand — burning out of a profession they chose because they love kids. Meanwhile, AI tools kept launching that treated student data like a commodity. "Just paste your roster in!" No thanks.
So we built the opposite: 23+ AI generators that create classroom-ready materials in seconds, protected by military-grade encryption, fully FERPA-compliant, with zero student data ever stored or sold.
The mission is simple: give every teacher the tools to spend their time where it matters — with their students.
TeachTools's answer:
TeachTools's answer:
Share your experience with using Eloquent JavaScript and TeachTools. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

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
Tracking TeachTools since May 2026.
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