Dragon NaturallySpeaking is a speech recognition software developed by Nuance Communications. We carry the PC Compatible Version 13. The software has three primary areas of functionality: dictation, text-to-speech and command input. The user is able to dictate and have speech transcribed as written text, have a document synthesized as an audio stream, or issue commands that are recognized as such by the program. Dragon users can launch windows, select items in a menu, "press keys," save files or even swap windows by speaking a command. Here’s a great link showing all the features of Dragon NaturallySpeaking 13 (copy and paste): http://www.nuance.com/ucmprod/groups/dragon/@web-enus/documents/collateral/nd_004125.pdf Cheat Sheet for Common Commands (copy and paste): http://www.nuance.com/ucmprod/groups/dragon/@web-enus/documents/collateral/nc_025213.pdf