There is only one file type that uses the .MAPX extension:
Mapjects Client Webparts File
File used by Mapjects GRYD, an operations visualization software package used for security management, energy management, and logistics; stores a client configuration of "Webparts," which are widgets that can be mashed together to display integrated visualizations; used for configuring rich client Web interfaces.
MAPX files reside on a Mapjects Web server and are parsed by the Web server to deliver the rich client content through a Web browser. They reference backend Mapjects .MAP data files, which contain the data and program code for the Webparts that are displayed. The Mapjects Web server supports rendering of HTML5, Silverlight, Flash, and PHP, as well as code for the ASP.NET Razor engine.
NOTE: The Mapjects GRYD yPlug plug-in allows Mapjects GRYD to load third-party components.
Updated: August 5, 2011