Libwpd for Linux

From AbiSource:

Libwpd for Linux is a C++ library designed to help process WordPerfect documents. It is most commonly used to import WordPerfect documents into other word processors, but may be useful in other cases as well. Libwpd for Linux exposes a simple callback-based API (similar to SAX), allowing it to be easily plugged into any C or C++ application. It strictly depends only on an implementation of the STL, although by interfacing with a library which abstracts the Microsoft OLE format (such as libgsf), you gain the ability to import OLE-embedded WordPerfect documents.