SXD
From Just Solve the File Format Problem
SXD (OpenOffice Draw, StarOffice Draw) is a vector graphics format associated with some versions of the StarOffice and OpenOffice.org office suites. It is a member of the OpenOffice.org XML family of formats. Refer to OpenOffice.org XML for more information.
Disambiguation
StarOffice Draw is also called StarDraw, but this is not to be confused with the unrelated software from Stardraw.com (see Wikipedia:StarDraw).