Quanta Plus is a Linux HTML editor for KDE.
(http://quanta.sourceforge.net/miniscreenshots/snapshot01.png)
It contains an assortment of features such as syntax highlighting, easy configuration of toolbars, site uploading facility, the ability to update a site from CVS (with a plugin), document structure tree, etc.
Link to Free Download: Quanta Plus Free Web Development Tool (http://www.theinfostride.com/forum/index.php?action=downloads;sa=view;down=141)