LeetCode - Practice and level up your development skills and prepare for technical interviews.
OfferZen - Offerzen is a job portal connecting employers and programmers.
Edabit - Learn to Code in 90 Days or Less
CodeGuild - CodeGuild serves as a network of professionals and specializes in recruitment within software engineering market.
Codewars - Achieve code mastery through challenge.
Zlott - Zlott analyses open source contributions of developers and helps companies connect with right matches for their engineering team