Tkoutline

Tkoutline software represents a single pane, cross-platform outline editor written in Tcl/Tk.
With this editor, information can be structured hierarchically in an outline and outlines can be hyperlinked together to create a web of outlines.
Here are some key features of "Tkoutline":
ï¿­ Cross-platform: runs anywhere Tcl/Tk runs (I have used it on linux and Windows and it has been reported to work on Mac OS 9.2)
ï¿­ Multiple outlines supported using a tabbed notebook interface
ï¿­ Inter-outline hyperlinks using wiki syntax (see Wiki-like hyperlinked outlines) allowing for the creation of a web of outlines.
ï¿­ Hyperlinking to parts of an outline
ï¿­ External URL hyperlink support
ï¿­ Support for bold, italics, underline, and strikethrough formatting
ï¿­ Drag and Drop movement of nodes
ï¿­ "Size" of each collapsed node is displayed
ï¿­ Available as a single file "starpack" distribution (standalone executable), or two file "starkit" distribution. No installation needed.
ï¿­ Relatively small--can fit on a single floppy disk.
ï¿­ Export to ascii, html, xml, opml
ï¿­ Import from indented text, opml
ï¿­ Save subtree, load tree as subtree
ï¿­ Key bindings are externally configurable
ï¿­ Mode-less - i.e. there isnt a separate mode for editing vs. for navigating the outline headlines.
ï¿­ User scriptable.
Behaves similar to a text editor:
ï¿­ Headlines are alway "active" and cursor movement between headlines is smooth
ï¿­ Headlines can be split at the cursor into two adjacent headlines by hitting the enter key
ï¿­ Two adjacent headlines can be merged by hitting delete at the end of a line or backspace at the beginning of a line