Franz is quite right. And of course you can turn Scrivener into a simple one-pane outliner if you want to (using the appropriate Workspace setup). But with all the bells and whistles in the background if you should need them...

Franz Grieser wrote:

@Stephen: There seems to be confusion about what you are really looking
for. Is it a "simple" outlining tool (such as Inspiration, UV Outliner)
or a full-featured writing environment (Word, Scrivener, Sente).

Re Inspiration: Installation simply did not finish correctly. There is
an Insp9IE.exe on my hard drive but it won't start.