Outliners

Kinkless

• One-pane, open-source outliner for Macintosh
• http://kinkless.com/pages/kgtd

InfoRecall

No export to HTML

http://www.phantech.com/

Action Outline

(1.6) Nice but lacks features such as sorting nodes and exporting to an HTML tree.

http://gpsoft.hypermart.net/

TreePad Plus

http://www.treepad.com/

A lot of features. Can export to an HTML tree using a free, third-party tool, but the output is pretty ugly by default, although that might be tweaked.

ShellFish Maple/Maple Professional

The Professional version supports exporting of an outline into a HTML tree, where the tree is build using Java or JavaScript.

http://www.shellfishsoft.com

GoldenSection Notes

http://www.tgslabs.com/

Freeware

• No export to HTML
• No sorting
• No "heading" (H1, etc.)
• No import of JPG or PNG files

Resources

• Overview of Windows Outlining Programs