Handpicked by Gyan
Things I keep coming back to — quantum tools, simulators, and learning hubs that actually click.
An open-source drag-and-drop quantum circuit simulator that runs entirely in the browser. You can build, visualise, and share quantum circuits instantly — no install, no account. The real-time state visualisation is what makes it special; you literally watch the qubits evolve.
algassert.com/quirkThe companion site to the O'Reilly book Programming Quantum Computers. Every chapter comes with live, runnable code samples across multiple backends (QCEngine, Qiskit, Cirq, Q#). An excellent bridge between textbook theory and practical circuit writing.
oreilly-qc.github.ioA suite of browser-based simulations from the University of St Andrews covering quantum mechanics from ground up — superposition, measurement, spin, entanglement, and more. Beautifully designed for intuition-building rather than just computation. I use this to re-anchor ideas when theory gets abstract.
st-andrews.ac.uk · QuVis