Documentation tools

Is there any other good free/open-source tool for documentating besides Microsoft's Sandcastle and NDoc, that is easy to use, has a GUI and generates HTML documentation?

Do you want to create web pages???
if yes then use microsoft publisher

Hey,

What is wrong with SandCastle?

I have used it in the past, and I have found it very simple to use. Did you find the SandCastle Help File Builder? This is a GUI that does all the hard command line work for you:

http://www.codeplex.com/wikipage?ProjectName=SHFB

Gary

Never used it but:

http://www.west-wind.com/wwHelp/

Nice find, didn't know about that one.

Out of interest, which, if any, documentation tool do you use?

Gary