DS&T represents a number of marine software houses, which as of this writing include:

Autofem: Autofem
Autodesk : AutoCAD, NavisWorks
BAS Engineering AS : ShipWeight
Creative systems Inc. : BHS, GHS, GHS Load Monitor
DRS Defense Solutions, Advanced Marine Technology Center: Maestro, Orca3D
Hydrocomp Inc. : NavCad, SwiftCraft, SwiftTrial
McNeel : Rhino3D, Flamingo, Accurender, Penguin, Bongo, Brazil
SSI : ShipConstructor