Wonderlic - Wonderlic offers pre-employment tests and student selection assessments.
Codewars - Achieve code mastery through challenge.
HackerEarth Recruit - HackerEarth provides technical recruitment solutions for talent sourcing and skill assessment.
CodeSignal - CodeSignal is the leading assessment platform for technical hiring.
Geektastic - Geektastic is a platform that manages peer reviewed code challenges supported by a community of qualified software engineers.
Djangojobs - Python and Django developer marketplace.