CodeGround

Realistic mock interviews. Unlimited free company-tagged problems. A tutor that can interact with your code. CodeGround is the best way to prepare for real technical interviews with adaptive AI interviewers, voice conversations, interruptions, follow-up questions, coding environments, and collaborative whiteboards the interviewer reacts to in real time. It supports coding, system design, quant, AI-assisted coding, and behavioral interviews in one platform, with unlimited free problem practice.