1
Cpp Core Guidelines
github.com/isocpp/CppCoreGuidelinesAlso covers git and programming
The C++ Core Guidelines provide established guidance for writing safer and simpler C++ programs.
Alternatives
The Best 30 Seconds of Code Alternatives in 2026
24 alternatives3 free · 4 open source
Looking for something like 30 Seconds of Code? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 3 are free or have a free plan and 4 are open source.
About 30 Seconds of Code30secondsofcode.org
Visit30 Seconds of Code offers hundreds of short coding articles to help readers practice programming skills.
Top picks at a glance
First suggestionCpp Core GuidelinesThe C++ Core Guidelines provide established guidance for…Free or freemium optionExercismExercism offers practice and mentoring across 83…Open source optionApp ideasThis repository collects application ideas that developers…Another optionCodewarsCodewars offers community-created coding exercises called…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Cpp Core Guidelines | — | Not stated | — |
| 2 | Codewars | — | Not stated | Web |
| 3 | App ideas | — | Yes | — |
| 4 | NeetCode | — | Not stated | Web |
| 5 | Try Ruby | — | Not stated | Web |
| 6 | Videos | — | Yes | — |
| 7 | CodeAbbey | — | Not stated | Web |
| 8 | AtCoder | — | Not stated | Web |
| 9 | Exercism | Free | Not stated | Web |
| 10 | Rosetta Code | — | Not stated | Web |
All 30 Seconds of Code alternatives
2
Codewars
codewars.comAlso covers programming · same kind of website
Codewars offers community-created coding exercises called kata, with practice across more than 55 programming languages.
3
Also covers programming · open source
This repository collects application ideas that developers can use to practice and improve their coding skills.
4
NeetCode
neetcode.ioAlso covers programming · same kind of website
NeetCode offers coding interview practice through courses, assessments, head-to-head mode, and a catalog of programming problems.
5
Try Ruby
try.ruby-lang.orgAlso covers programming · same kind of website
TryRuby gives users a short, interactive introduction to programming in Ruby.
6
Also covers git · open source
This repository provides solutions to LeetCode problems for readers to review and use in coding practice.
7
CodeAbbey
codeabbey.comAlso covers programming · same kind of website
CodeAbbey offers programming problems for practice, with recent challenges and a programming certificate.
8
AtCoder
atcoder.jpAlso covers programming · same kind of website
AtCoder hosts online programming contests, including beginner and heuristic contests, with practice contests for new users.
9
Also covers programming · same kind of website · free
Exercism offers practice and mentoring across 83 programming languages.
10
Rosetta Code
rosettacode.org/wiki/Rosetta_CodeAlso covers programming · same kind of website
Rosetta Code presents solutions to the same programming tasks in multiple languages for comparison.
11
Programiz
programiz.comAlso covers programming · same kind of website
Programiz offers free online compilers and code editors alongside programming tutorials for languages including Python, JavaScript, SQL, and C++.
12
EMKC
emkc.org/challengesAlso covers programming · same kind of website
EMKC offers practical coding challenges and contests that can be completed in any of 17 programming languages.
13
Build your own X
github.com/codecrafters-io/build-your-own-xAlso covers programming
Build Your Own X teaches programming by guiding readers through recreating familiar technologies.
14
Also covers git · open source
A public list collects open-source frontend coding challenges from companies for testing development skills.
15
Also covers programming · same kind of website · free plan
Hacksplaining teaches secure coding through interactive browser lessons covering OWASP Top 10 and GenAI threats.
16
HackerRank
hackerrank.comAlso covers programming · same kind of website
HackerRank is a coding test and interview solution for hiring developers.
17
CodingFantasy
codingfantasy.comAlso covers programming · same kind of website
CodingFantasy teaches CSS, HTML, and JavaScript through browser-based coding games.
18
PHP: The Right Way
phptherightway.comAlso covers programming · same kind of website
PHP: The Right Way offers a quick reference to PHP practices, coding standards, and links to tutorials.
19
Skilled.dev
skilled.devAlso covers programming · same kind of website
Skilled.dev provides coding interview preparation through a course for developers pursuing software engineering roles.
20
Also covers programming · open source
Coding Problems provides solutions to coding and algorithm problems and multiple programming exercises.
21
Also covers programming · same kind of website · free
Scratch lets people create interactive stories, games, and animations with a visual programming language and online community.
22
modern-cpp-tricks
github.com/rachitiitr/modern-cpp-tricksAlso covers programming
This list collects modern C++ techniques used in coding interviews and competitive programming.
23
QB64SourceCode
qb64tutorial.comAlso covers programming · same kind of website
A beginner tutorial introduces game programming with QB64 Phoenix Edition.
24
Codility
app.codility.com/programmersAlso covers programming · same kind of website
Codility Developer Training offers hands-on programming lessons, including exercises on topics such as binary gaps.
No alternatives match this filter.
Alternatives to similar tools
Scratch24 alternativesHacksplaining24 alternativesQB64SourceCode24 alternativesCodeAbbey24 alternativesCodility24 alternativesCoding Problems24 alternatives
What is the best alternative to 30 Seconds of Code?
Based on features, tags and platforms, the closest alternatives to 30 Seconds of Code are Cpp Core Guidelines, Codewars, and App ideas.
Is there a free alternative to 30 Seconds of Code?
Yes. Exercism, Hacksplaining, and Scratch are free or offer a free plan.
Are there open-source alternatives to 30 Seconds of Code?
Yes: App ideas, Videos, Frontend Challenges, 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