
Brilliant.org
EloMath
Khan Academy
Numberthon
Project Euler
LeetCode
mathigon
Practice olympiad-style math problems and compete against other users.

Scrimba
Codédex
CodeCrafters
Data Protocol
Codelita
Eloquent JavaScript
The State of JavaScript 2018
A free resource for learning and developing in JavaScript

Which is more popular?
Based on our record, JavaScript.com seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | calcora.net | javascript.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from Switzerland · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Calcora is a free platform for practicing math problems of all difficulty levels. Solve problems, maintain your streak, and compete with friends on the leaderboard. The Rules No Calculator. Solve every problem by hand. Mental math and working on paper are part of the challenge. No AI Assistance....
No description of JavaScript.com yet.
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
No analysis of JavaScript.com yet.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Calcora.net and JavaScript.com. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking Calcora.net since Mar 2026.
The best resource I know of is Javascript.com for learning Javascript for the first time. It's made by Pluralsight which is a site that contains courses. - Source: dev.to / over 4 years ago
When comparing Calcora.net and JavaScript.com, you can also consider the following products.

Brilliant - Understand concepts and build your problem solving skills with thousands of free problems and examples in math, science, and engineering.
Compare Brilliant.org to Calcora.net or JavaScript.com:

Interactive coding screencasts created in an instant
Compare Scrimba to Calcora.net or JavaScript.com:

Improve math skills with ranked practice, Elo-style ratings, topic lessons, timed challenges, progress stats, rewards, and a global leaderboard.
Compare EloMath to Calcora.net or JavaScript.com:


Khan Academy offers online tools to help students learn about a variety of important school subjects. Tools include videos, practice exercises, and materials for instructors. Read more about Khan Academy.
Compare Khan Academy to Calcora.net or JavaScript.com:

Programming exercises for experienced engineers.
Compare CodeCrafters to Calcora.net or JavaScript.com: