Wonderlic - Wonderlic offers pre-employment tests and student selection assessments.

Robert Half - Robert Half is the specialized staffing firm, providing skilled professionals in the fields of accounting & finance, technology, legal, etc.

Prevue HR - Prevue offers pre-employment assessment and applicant tracking system solutions.

HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.

Codility - Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.

Geektastic - Geektastic is a platform that manages peer reviewed code challenges supported by a community of qualified software engineers.