Sites and apps similar to Dataford include LeetCode, which has a free version. Other options are HackerRank and DataLemur. In total there are three Code Learning Services like Dataford.
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
DataLemur is a FREE SQL & Data Science Interview platform, used by thousands of Data Analysts & Data Scientists to prep for their technical interviews at companies like Amazon, Google, and Microsoft.
