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


The best Code Learning alternative to LeetCode is exercism, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to LeetCode and 18 are Code Learning Services so hopefully you can find a suitable replacement. Other interesting Code Learning Service alternatives to LeetCode are Codecademy, Project Euler, CheckIO and CodinGame.
Download and solve practice problems in over 30 different languages. For code newbies and experienced programmers.


Explore free interactive coding courses in web development, data science, and various languages. Codecademy offers a fun, collaborative learning environment with community support, personalized paths, skill assessments, and more, covering both foundational and advanced concepts.



Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve.






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:



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.



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.
Welcome to the most captivating, finger-flying, addictive way to learn to code.


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.




SQL Noir is a free, browser-based game that helps you learn and practice SQL by solving fictional crimes. Each mission presents a new detective case, complete with its own database full of clues hidden in tables, records, and relationships. Your job?




A Website and Newsletter that helps software engineers level up their skills through a series of coding challenges that are:

A little more mathy. Instead of submitting a bit of code you actually submit the answer to a problem that should be solved through code. But it's free and unpaywalled so it's a cool little project. Currently around 760 problems