Vector Sigma is a FREE profile for Voice Attack. It was created to help you while travelling around the galaxy in Elite: Dangerous. It works like an AI or a Virtual Copilot.
You can tell it to deploy/retract weapons, landing gear, turn the lights on/off, deploy the SRV, scan a whole system, manage energy between Systems/Engines/Weapons, open panels, request docking permission, etc. You can even ask information about commodities, materials and a bunch of astronomy subjects.
Since version 2.0, Sigma can even manage a multicrew of voices. With this feature you can set different voices (Microsoft standard voices and some of IVONA 2 pack) to be responsible for different parts/areas of your ship.