tkoutline - http://tkoutline.sourceforge.net/ is an outline editor. It is distributed as a starkit, a win32 starpack, and as a standard tar distributed source tree.
Version 0.92 released on 11-Mar-03
Tkoutline uses a modified wikit as its website. The date at the bottom of each page is a link to the same page with the its most recent changes highlighted. Also, the Contents link at the bottom of each page provides the functionality I posted at Wiki heirarchical table of contents.