There is only one file type that uses the .MRT extension:
Stimulsoft Report File
Report file created by Stimulsoft Reports, a Windows report generator; contains the page layout information, data fields, and visual elements for the report; can be saved in many different formats, including Adobe .PDF, Microsoft Office (.DOCX, .XLSX, .PPTX), .HTML, and several raster and vector image formats.
Stimulsoft reports are often used with .NET Framework applications and Web applications. For desktop applications, the reports can be delivered via the application's user interface at runtime.
An example application that uses Stimulsoft reports is Docusnap, an enterprise information technology (IT) reporting application that uses MRT files for hardware and software reports. Another example is Sitecore Online Marketing Suite (OMS), which uses Stimulsoft reports for Web-based reporting.
NOTE: The Stimulsoft software is most commonly installed as a plugin for Microsoft Visual Studio.
Updated: February 10, 2011