Best CheckIO Alternatives (31)

BitDegree

BitDegree is an online education platform that offers blockchain-related courses and training. It uses blockchain technology to issue course completion …

LeetCode

LeetCode is an online platform for preparing technical coding interviews. It contains a large database of coding questions and allows …

CodeCombat

CodeCombat is a game-based learning platform for learning programming languages like JavaScript, Python, and TypeScript. Students can play through fun …

WarriorJS

WarriorJS is a game designed to teach JavaScript fundamentals and coding techniques through a fantasy roleplaying game interface. Players code …

CodinGame

CodinGame is an online platform for coding challenges and programming puzzles. It allows developers to practice and improve their coding …

HackerRank

HackerRank is an online platform that provides coding challenges and contests to help developers improve their programming skills. It offers …

Codeeval

Codeeval is an online platform that provides coding challenges and assessments to help developers practice their skills. It has a …

Screeps

Screeps is an open-source sandbox MMO RTS game for programmers, wherein players control colonies of robots that harvest energy and …

exercism

Exercism is an open source online platform that provides programming exercises and mentoring for people looking to improve their coding …

HackerEarth

HackerEarth is a technology hiring platform that helps companies conduct online coding tests to screen and hire developers. It provides …

Codier

Codier is a code editor and IDE designed for web development. It has features like syntax highlighting, autocompletion, integrated terminal, …

Ruby Warrior

Ruby Warrior is an open source game for learning Ruby programming. Players control a warrior traversing a tower, battling enemies …

CodeSignal

CodeSignal is an online platform that helps tech professionals prepare for coding interviews through practice assessments and programming challenges. It …

Vim Adventures

Vim Adventures is a game that teaches you how to efficiently use Vim, a popular text editor. It presents increasingly …

Edabit

Edabit is a free platform for learning and practicing coding through interactive challenges. It offers bite-sized coding challenges in Python, …

SoloLearn

SoloLearn is a free mobile and web platform for learning programming languages and concepts. It offers bite-sized coding lessons and …

Codewars

Codewars is an educational community for computer programming. It offers code challenges known as kata which are ranked by difficulty. …

Kattis

Kattis is an online platform focused on programming competitions and education. It provides problem sets that allow users to practice …

CSSBattle

CSSBattle is a web-based game that challenges players to recreate simple image patterns using only HTML and CSS code. It …