The home site of the first start up company devoted entirely to quantum computing. No patents or products to date, but of interest by virtue of being first off the block. http://www.magiqtech.com
A Windows based simulator of quantum computer hardware. Provides an environment to execute quantum algorithms under realistic experimental conditions. http://rugth30.phys.rug.nl/compphys0/qce.htm
D-Wave Systems (dwavesys.com) is a portal to the state of the art in the design of quantum computers, operating systems, algorithms, hardware, superconductors, and quantum physics. http://www.dwavesys.com
A C library for the simulation of a quantum computer. It provides all important operations and the simulation of decoherence effects. http://www.enyo.de/libquantum/
The research on Josephson junction quantum bits aims at developing a system of coupled Josephson persistent current qubits for investigating the principles of quantum computation as well as investigating quantum effects in macroscopic systems. http://qt.tn.tudelft.nl/%7eterhaar/