Learn to code JavaScript by playing game. This game claims to be the world’s first MMO strategy sandbox game for programmers.
Cost / License
- Paid
- Proprietary
Platforms
- Mac
- Windows
- Linux
- Online
- SteamOS



LeetCode is described as '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' and is a Code Learning service in the development category. There are more than 50 alternatives to LeetCode, not only websites but also apps for a variety of platforms, including Windows, Mac, SaaS and Android apps. The best LeetCode alternative is exercism, which is both free and Open Source. Other great sites and apps similar to LeetCode are Codecademy, Project Euler, HackerRank and Codewars.
Learn to code JavaScript by playing game. This game claims to be the world’s first MMO strategy sandbox game for programmers.



An AI-powered platform offering interactive courses for developers, featuring instant code feedback, mock interviews, adaptive learning paths, and 'Explain with AI' for on-demand explanations. Ideal for onboarding, upskilling, and mastering programming languages.



Sphere Online Judge created for the coders' community to train, to learn and to make progress. With thousands of programming problems and an international group of users Spoj is one of the best programmers' communities and online judges in the world.
Stack Bash helps new and seasoned software engineers prepare for coding interviews. Stack Bash contains guides on fundamental data structures and algorithms, and a curated list of coding interview questions.

Coderbyte is a place built for anyone to practice and perfect their programming skills. Challenges are added almost every day so you can work on applying your algorithmic thought process on any problem you want at anytime.
Memoized is an open-source platform for preparing coding interviews with a focus on JavaScript and TypeScript.


CodeSignal is the leading provider of assessments for technical hires. As the creator of the Predictive Coding Score, a measure of a candidates coding skills, CodeSignal provides HR teams with Certified Assessments, Custom Tests, and Live Interviews.




Topcoder provides members opportunities to demonstrate their expertise, improve their skills, and win cash, while helping real world organizations solve real world problems.
Equip is built for recruiters to conduct pre-hiring assessments. Our assessments test multiple skills at different competencies. Using our vast Question Libraries, or creating Custom Tests enables teams to hire developers, designers, sales representatives and more!




Our AI powered adaptive learning engine learns your strong and weak topics and recommends problems to solve accordingly. This will help you prepare for software interviews of top tech companies (like Google, Facebook, Amazon etc.) more efficiently.
HackerEarth is the most comprehensive developer assessment software that helps companies to accurately measure the skills of developers during the recruiting process.



