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.skp - SketchUp document file
.pages - iWork Pages document file
.wps - Microsoft Works document
.xls - Microsoft Office Excel spreadsheet
.odt - OpenOffice.org Writer text document
.pub - Microsoft Publisher document
.pps - Microsoft PowerPoint slideshow
.epub - Open Publication structure eBook
file extension HLP - Advisor help file
.HLPFile extension HLP description:
Old format for help files used by Microsoft in many older applications.
Associated applications to file extension HLP:
Company / developer:
Microsoft Corporation
Microsoft Windows
Microsoft Windows is a family of operating systems by Microsoft. They can run on several types of platforms such as servers, embedded devices and, most typically, on personal computers. Microsoft first introduced an operating environment named Windows in November 1985 as an add-on to MS-DOS in response to the growing trend of graphical user interfaces (GUI) popularized by the Macintosh. Microsoft Windows eventually came to dominate the world's personal computer market.