NoteCenter

NoteCenter lets you
organize text-based information in a hierarchical tree-type format, similar
to way files and folders are displayed in Explorer. Each branch of
information may hold up to 64KB of data, with the number of branches
virtually unlimited. URLs are detected automatically; just place your cursor
on a URL and right-click to bring up a menu that takes you to the Web.
You'll also find all common text-editing functions, drag-and-drop notes
arranging, fast search&replace (available after registration),
text-encryption and multi-lingual interface. NoteCenter uses plain HTML to
store note-trees so you can view them in your web-browser.