1
Also covers open source and programming · same kind of open-source project
Basic Computer Games updates the classic programming book with examples in modern memory-safe languages.
Alternatives
The Best 33 JS Concepts Alternatives in 2026
24 alternatives1 free · 8 open source
Looking for something like 33 JS Concepts? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 1 are free or have a free plan and 8 are open source.
About 33 JS Conceptsgithub.com/leonardomso/33-js-concepts
Visit33 JS Concepts summarizes JavaScript concepts for developers, with examples and reference material.
Top picks at a glance
First suggestionBasic Computer GamesBasic Computer Games updates the classic programming book…Free or freemium optionJavaScriptQuizJavaScriptQuiz tests JavaScript knowledge through…Another optionApp ideasThis repository collects application ideas that developers…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Basic Computer Games | — | Yes | — |
| 2 | App ideas | — | Yes | — |
| 3 | Awesome Leetcode Resources | — | Yes | — |
| 4 | Coding Problems | — | Yes | — |
| 5 | Reverse-Engineering | — | Yes | — |
| 6 | Programming Learning Index | — | Yes | — |
| 7 | awesome-low-level-design | — | Yes | — |
| 8 | 30 Days Of JavaScript | — | Not stated | — |
| 9 | You Don't Know JS | — | Not stated | — |
| 10 | system-design-primer | — | Not stated | — |
All 33 JS Concepts alternatives
2
Also covers open source and programming · same kind of open-source project
This repository collects application ideas that developers can use to practice and improve their coding skills.
3
Also covers open source and programming · same kind of open-source project
Awesome LeetCode Resources collects learning materials for data structures and algorithms and provides a newsletter link.
4
Also covers open source and programming · same kind of open-source project
Coding Problems provides solutions to coding and algorithm problems and multiple programming exercises.
5
Also covers open source and programming · same kind of open-source project
This tutorial covers reverse engineering across x86, x64, ARM, AVR, and RISC-V processor architectures.
6
Also covers open source and programming · same kind of open-source project
This repository lists freely available learning resources across programming, mathematics, and science.
7
Also covers open source and programming · same kind of open-source project
awesome-low-level-design provides resources for learning low-level design and preparing for interviews.
8
30 Days Of JavaScript
github.com/Asabeneh/30-Days-Of-JavaScriptAlso covers programming · same kind of open-source project
The 30 Days of JavaScript challenge provides step-by-step programming lessons that learners can follow at their own pace.
9
You Don't Know JS
github.com/getify/You-Dont-Know-JSAlso covers programming · same kind of open-source project
You Don’t Know JS is a book series that explores the core mechanisms of the JavaScript language.
10
system-design-primer
github.com/donnemartin/system-design-primerAlso covers programming · same kind of open-source project
The system design primer explains large-scale system design and includes interview preparation material and Anki flashcards.
11
PHP: The Right Way
phptherightway.comAlso covers programming
PHP: The Right Way offers a quick reference to PHP practices, coding standards, and links to tutorials.
12
Python Patterns
python-patterns.guideAlso covers programming
Python Patterns explains common software design patterns through examples in Python.
13
CP-Algorithms
cp-algorithms.comAlso covers programming
Competitive programming algorithms are documented with descriptions and examples in CP-Algorithms.
14
Learn X in Y minutes
learnxinyminutes.comAlso covers programming
Learn X in Y Minutes offers concise programming language tours and examples.
15
Codility
app.codility.com/programmersAlso covers programming
Codility Developer Training offers hands-on programming lessons, including exercises on topics such as binary gaps.
16
HackerRank
hackerrank.comAlso covers programming
HackerRank is a coding test and interview solution for hiring developers.
17
Skilled.dev
skilled.devAlso covers programming
Skilled.dev provides coding interview preparation through a course for developers pursuing software engineering roles.
18
CodingFantasy
codingfantasy.comAlso covers programming
CodingFantasy teaches CSS, HTML, and JavaScript through browser-based coding games.
19
Programiz
programiz.comAlso covers programming
Programiz offers free online compilers and code editors alongside programming tutorials for languages including Python, JavaScript, SQL, and C++.
20
JavaScript.info
javascript.infoAlso covers programming
JavaScript.info provides a detailed modern JavaScript tutorial in multiple languages.
21
Also covers programming · free
JavaScriptQuiz tests JavaScript knowledge through randomized questions.
22
Also covers open source · same kind of open-source project
The Modern JavaScript Cheatsheet summarizes JavaScript knowledge used in contemporary projects.
23
System Design Academy
github.com/systemdesign42/system-design-academyAlso covers programming · same kind of open-source project
System Design Academy points readers to a newsletter about AI engineering and system design.
24
Build your own X
github.com/codecrafters-io/build-your-own-xAlso covers programming · same kind of open-source project
Build Your Own X teaches programming by guiding readers through recreating familiar technologies.
No alternatives match this filter.
Alternatives to similar tools
Codility24 alternativesSystem Design Academy24 alternativesCoding Problems24 alternativessystem-design-primer24 alternativesProgramming Learning Index24 alternativesYou Don't Know JS24 alternatives
What is the best alternative to 33 JS Concepts?
Based on features, tags and platforms, the closest alternatives to 33 JS Concepts are Basic Computer Games, App ideas, and Awesome Leetcode Resources.
Is there a free alternative to 33 JS Concepts?
Yes. JavaScriptQuiz is free or offer a free plan.
Are there open-source alternatives to 33 JS Concepts?
Yes: Basic Computer Games, App ideas, Awesome Leetcode Resources, and Coding Problems.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative