Sites and apps similar to Bigsib include LeetCode, which has a free version. Other options are HackerRank, Codewars, Project Euler and Topcoder. In total there are seven Code Learning Services like Bigsib for self-hosting.
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.
United States
A fun social platform for hackers to solve interesting puzzles, build quick hacks, code game bots and collaborate to solve real-world challenges.
United States
United States
Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve.
Topcoder provides members opportunities to demonstrate their expertise, improve their skills, and win cash, while helping real world organizations solve real world problems.
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.
India
Russia