Prefer - Professionals you need, from people you know
hackattic - No nonsense, real world programming challenges
Chummy - The simplest way to ask for help and pay it forward ❤️
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Q Marketplace - Schedule, book, manage and pay for office services
Takehome - Effective and humane coding challenges for candidates