CodeSubmit - Make Better Hiring Decisions Real-World Technical Interviews
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Qualified.io - Developer-friendly coding assessments
Codility - Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.
Takehome - Effective and humane coding challenges for candidates
iMocha - Make intelligent talent decisions.