The English Editor II
The English Editor II is an XML editor for BeOS. It also handles email and Usenet messages. It is currently incomplete, but more or less usable. Give it a try if you're interested in seeing an editor that doesn't look much like other text editors.
The "Tab" key is the "tag" key--use it to insert new XML tags (such as "bold", "italic", etc.) or change the tag-names of existing ones.
Send bug reports, etc. to firstname.lastname@example.org.