hackattic - No nonsense, real world programming challenges
Hacker Noon - How hackers start their afternoons.
Takehome - Effective and humane coding challenges for candidates
Indie Hackers - Connect with fellow entrepreneurs, developers, and bootstrappers who are sharing the strategies and revenue numbers behind their companies.
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Hashnode App - Hashnode is a free blogging platform for developers who want to plug into the global dev community while retaining ownership of their content.