We have found one software suitable in our database for this conversion.
It looks like that FreeCAD drawings (.fcstd) can be exported to all sorts of other 3D formats, including Collada 3D assets (.dae), using the default export function found in the program.
Unfortunately, we do not know about any program that could otherwise perform fcstd to dae conversion, as .fcstd files seems to be exclusive to FreeCAD.
FCSTD
An fcstd file extension is related to the FreeCAD, a parametric 3D modeling software for Windows, Mac, Linux. An fcstd file stores drawing.
DAE
A dae file extension is used for COLLADA 3D graphic interchange format. Used in several games and programs and supported by graphic editors such as Adobe Photoshop or Blender.