WinCHM

WinCHM is a very easy-to-use help authoring tool. Not needing to learn too much, you can be master of creating HTML help(CHM), Web help, PDF and Word documents. Using WinCHM you can not only make help files with nothing, but also convert a set of HTML files into a CHM file.

WinCHM combines a WYSIWYG (What You See Is What You Get) html editor and a content tree-view in one window. You can easily navigate the Table of Contents and insert or edit help topics without much fuss.