The 1.0 version of QCircuit for Mac is available as a free download on our website. The program lies within Education Tools, more precisely Science. This free software for Mac OS X was originally produced by Matthew Ewer. Our built-in antivirus scanned this Mac download and rated it as virus free.
From the developer:
QCircuit is an aid for understanding, designing, and simulating quantum circuits. You essentially drag and drop gates into place on a set of "wires" and see its effects. You can feed input bits in one end of a circuit and watch the values change as they continue through the circuit.
You may want to check out more software for Mac, such as Genealogy Pro, sciatrope or Curvus Pro X, which might be related to QCircuit.