Download and solve practice problems in over 30 different languages. For code newbies and experienced programmers.


CheckIO is described as 'Online game for Python and JavaScript coders to improve skills' and is a Code Learning service in the development category. There are more than 25 alternatives to CheckIO for a variety of platforms, including Web-based, Windows, iPhone, Linux and Android apps. The best CheckIO alternative is exercism, which is both free and Open Source. Other great apps like CheckIO are SoloLearn, LeetCode, HackerRank and Codewars.
Download and solve practice problems in over 30 different languages. For code newbies and experienced programmers.


Learning has never been this social and accessible for so many! Bit-sized videos and fun practice sessions grab your attention and keep you focused, for guaranteed best results!.




LeetCode is a platform for learning and improving coding skills with the goal of being fully prepared for programming interviews. Choose problems to solve from categories such as System Design, Algorithms and Database, join code contests and engage in mock interviews.


A fun social platform for hackers to solve interesting puzzles, build quick hacks, code game bots and collaborate to solve real-world challenges.





Interactive platform for acquiring Web3 skills via Missions—micro-tasks covering crypto topics—rewarding users with tokens, NFTs, and merchandise from crypto brands. Earn Bits to boost winning odds, create Missions, join Guilds, and benefit from referrals.





Memoized is an open-source platform for preparing coding interviews with a focus on JavaScript and TypeScript.


CodinGame is a challenge-based training platform for programmers where you can play with the hottest programming topics.


When learning to code, most people get stuck on the "bridge" between memorizing syntax and understanding the logic that makes it all work. We believe the most effective way to learn a programming language is to break the process into three phases:



Learn to code JavaScript by playing game. This game claims to be the world’s first MMO strategy sandbox game for programmers.



WildLearner is a gateway that will help you study coding & be hired in the world's best startups. We provide coding experiences for the most popular coding languages and frameworks and making your coding profile for further job findings.



