Shameless plug: A standalone WordPerfect filter component is available now for OpenOffice.org. Try this URL: http://libwpd.sf.net.
WordPerfect export was pretty much always experimental in AbiWord/KOffice (libwpd doesn't even try). You're much better saving your document to rich text.
Perhaps something along the line of Sun's approach with OpenOffice.org might be what you are looking for? The product itself is licensed under LGPL/SISSL (SISSL==BSD with the requirement that you maintain compatibility), but when it comes to accepting third party contributions, the developer must share their copyright with Sun.
This allows Sun to defend against licensing violations as they come up (since there is no ambiguity as to who owns what). They also sell a commercial fork with some proprietary extras (more fonts, extra file filters) to the business community with no worries.
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Shameless plug: A standalone WordPerfect filter component is available now for OpenOffice.org. Try this URL: http://libwpd.sf.net. WordPerfect export was pretty much always experimental in AbiWord/KOffice (libwpd doesn't even try). You're much better saving your document to rich text.
This allows Sun to defend against licensing violations as they come up (since there is no ambiguity as to who owns what). They also sell a commercial fork with some proprietary extras (more fonts, extra file filters) to the business community with no worries.