The xmfd file extension is associated with the FileMaker Pro, a relational database management system for Microsoft Windows and Apple Mac OS X operating systems. The xmfd file stores some kind of data used by FileMaker software. The default software associated to open xmfd file: FileMaker Pro for Windows Company or developer: FileMaker, Inc.xmfd Extension - List of programs that can open .xmfd files In the following table, you can find a list of programs that can open files with .Milford Fire Department has recently taken delivery of a KME Severe Service XMFD Pumper!