HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Robinhood - Free stock trading service.
iMocha - Make intelligent talent decisions.
Signals.me - Free daily stock & forex signals powered by AI
Codility - Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.
Collage - Drag and drop productivity.