Quantum Computers: Wikipedia defines quantum computers as follows: A quantum computer is a computation device that makes direct use of quantum-mechanical phenomena, such as superposition and entanglement, to perform operations on data. Quantum computers are different from digital computers based on transistors. Whereas digital computers require data to be encoded into binary digits (bits), quantum computation uses quantum properties to represent data and perform operations on these data.
QuickTime: Developed by Apple, QuickTime is a multimedia player which can handle various formats of digital video, imagery, sound and panoramic views. It's also interactive. The basic version simply plays media back, but the Pro version enables users to get their hands dirty in the cutting room.
Quora: Quora is a questions and answers blog site with over 250,000 topics. Users can also create blogs to share their knowledge of the topic. You have to be a user to post, so it isn’t anonymous and is edited by the reader to encourage quality responses.