Cost / License
- Freemium (Pay once or Subscription)
- Proprietary
Platforms
- Online

Coderbyte is described as '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' and is a Code Learning service in the development category. There are more than 100 alternatives to Coderbyte, not only websites but also apps for a variety of platforms, including iPhone, Android, Windows and SaaS apps. The best Coderbyte alternative is freeCodeCamp, which is both free and Open Source. Other great sites and apps similar to Coderbyte are Coursera, Codecademy, exercism and Scratch.

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.
A Computer Science portal for geeks. It contains well written, well thought and well-explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions.

Examtray provides free online tests and tutorials on programming languages, databases, general knowledge and general English. It prepares you technically ready for tomorrow.





TutorialsTeacher.com is optimized for learning web technologies step by step. Examples might be simplified to improve reading and basic understanding.




Waterbear is a toolkit for making programming more accessible and fun. Having a visual language means you don't have to focus on learning a syntax to start programming.

The online programming practice in java and python.
CodingBat is a free site of live coding problems to build coding skill in Java, and now in Python (example problem), created by Nick Parlante who is computer science lecturer at Stanford. The coding problems give immediate feed.



Upskill makes it simple and affordable for anyone worldwide to become a job-ready programmer by taking a straight forward approach to education and job prep.


CodeChef is a not-for-profit educational initiative by Directi, an Indian software company. It is a global programming community that fosters learning and friendly competition, built on top of the world’s largest competitive programming platform.


Codility is an evidence-based platform helps hiring teams predict the real-life skills of their candidates, remotely and at scale. This brings faster hiring, time savings, and gives engineers more time to solve problems that matter.