.FWP File Extension

Archive created by Microsoft Expression Web, a website design program that is part of Expression Studio; contains all files and folders for a design and allows the design to be exported and then imported into another copy of Expression Web.

You can create FWP files in Expression Web 4 by choosing the Site → Export to Web Package... menu option. You can import them by selecting Import → Import from Web Package....

NOTE: FWP files use Microsoft's .CAB format.