HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Xobin - Most Comprehesive Pre-Employment skills testing and Psychometric Assessment Platform.
Codility - Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.
After Interview - Get feedback from job interviews to improve
iMocha - Make intelligent talent decisions.
Interviews on Skype - Test candidates using a real-time code editor over Skype