Closer to the subject of OpenOffice and LibreOffice, although of only passing effect on the comparisons, it was recently reported that the ten year court battle by WordPerfect to claim that Microsoft "coerced them" into issuing a Windows compatible version in order to steal all their ideas and technology was dismissed by the court as "without grounds."

Having used both WordPerfect and Word for some years before Windows (compatibility didn't matter with DOS), I'm fairly confident that WP had little worth stealing once Word settled into viable form; but of course others are entitled to their own stupid opinions free to make their own assessments.

John