WebPlug is a MUI based HTML editor for the Amiga.
It's not WYSIWYG, but at least it will help you (hope a lot) when creating your web pages.
You can send your HTML page to any WWW-browser (as long as it has ARexx port) to see the progress, and to correct mistakes. By now, AWeb, IBrowse, Multiview and AMosaic are supported.
Adding a new browser is just a matter of creating a new BrowserLink, an external library that tells WebPlug how to communicate with a given browser.
WebPlug offers a number of buttons/GUIs for the HTML tags. For example, the image button. This one will open a GUI where you can specify an image, it's AltText, it's border, etc... Then simply press 'Insert' (or use Drag'n'Drop if you prefer) and WebPlug will send the information its' editor.
Of course, it can use cut & paste. Simply mark a block of text and press 'Bold' in the styles list. WebPlug will cut the block, type the desired tags and paste again the text between these tags.
By now, WebPlug supports most important HTML tags, including some HTML-3 and Netscape® tags, such as CENTER and others.
WebPlug doesn't support Frames yet. Expect this feature on a newer version of this program. By now, this can be partially done using the CustomTagList of v1.2.