Content Express
http://www.xexpress.org/
RTE for PN Beta5 (release 0.8.1)
http://web2.chicago180.server4free.de/pw/index.php?newlang=eng
Pagesetter
http://www.elfisk.dk/
Open CMS (Serverlets)
http://www.opencms.org/opencms/en/support/features.html
Easy Web Editor
http://www.openmymind.net/products/ewe/index.php
Spaw
http://www.solmetra.com/en/disp.php/en_products/en_spaw/en_spaw_about