HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
LeetCode - Practice and level up your development skills and prepare for technical interviews.
Awesome GitHub Topics - Top 500 topics on GitHub that's filtered and categorized
Edabit - Learn to Code in 90 Days or Less
CodeSignal - CodeSignal is the leading assessment platform for technical hiring.
Codewars - Achieve code mastery through challenge.