Blochsphere(https://bloch.kherb.io/) allows you to visualize current state of the qubit. But, what if you wanted to visualize what happened to the qubit before reaching that state ? BlochTrace allows you to trace the path, which is snapshot of states the qubits followed in a given circuit. Each of qubits of the circuit are assumed to be in pure states. Each arrow in the trace represents snapshot of applying an operation on the qubit. View the demo below, every operation starts with pointing in z direction, the sequence of numbers are added as label. Use mouse to drag and move in 3D space