Luminotes: No-Frills Wiki Notebook

“Imagine an application that combines the features of a wiki and
a Web-based notebook. It may sound like an unusual mix, but
Luminotes wiki notebook is living proof that this combination works
rather well.

“Similar to TiddlyWiki, Luminotes treats notes as separate items
which you can manage individually and show and hide as you see it
fit. This makes Luminotes a perfect tool for managing notes in a
non-linear manner…”