There is only one file type that uses the .LWP extension:
Lotus Word Pro Document
Word processing document created by Lotus Word Pro, a business-oriented word processor included with the Lotus Smart Suite; used to create reports, proposals, and other kinds of documents.
LWP files can be opened with the free KeyView for Lotus application, which was developed by Verity.
NOTE: Lotus is a subsidiary of IBM.
Updated: February 28, 2011