Lots of pieces from lots of places . DC being a spaceplane is a much more complex project than a capsule, even though it's limited to just Earth orbit.
The development team:
Sierra Nevada Corporation -
Experienced space co. with projects from satellites to major parts of the Mars rovers. In addition to coordinating and managing the team, SNC will manage all internal systems, propulsion, structure, and launch vehicle.
Adam Works -
Aerospace composite structures. To assist SNC in structural fabrication using their combined composite manufacturing capabilities.
Rocket engine design & manufacture. Development of the main reaction control system (RCS)
Draper Laboratory –
to lead orbital guidance, navigation and control (GN&C) development.
Phantom Works division will build the test article. Boeing main to provide expertise in lifting body spacecraft including analysis, avionics, GN&C, software, and flight control.
NASA Langley Research Center -
expertise in HL-20 (the source design) analysis and modeling.
(Canada) Makers of the Shuttles Canadarm, and other space hardware. The U.S. component of MDA will provide launch vehicle structural interface, communication and separation systems, and systems engineering services.
University of Colorado -
CU will conduct displays and controls layout and evaluations and refine the integrated system Human Rating Plan, with assistance from SAS.
Assist Colorado University with displays and controls layout and evaluations and refine the integrated system Human Rating Plan.
United Launch Alliance -
Atlas V launcher. ULA has been on the team for more than 4 years.
United Space Alliance -
Managed Shuttle operations. USA will use their extensive Shuttle experience to provide operations and software development support.
Virgin Galactic -
SNC and Virgin Galactic are working together to plan for global marketing, sales, and commercial operation of the orbital Dream Chaser.