Spoj - Sphere Online Judge created for the coders' community to train, to learn and to make progress.
Daily Coding Problem - Get exceptionally good at coding interviews
99 Interview - 99Interview provide you the platform to prepare the interview before facing the real interview panel.
FaceCode - Hire top tech talent with video interviews
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Volum - Take control of those devices that don't have HomeKit, Alexa or Google Assistant support.