1)   HelpScribble 7.7.4
Full-featured, easy-to-use help authoring tool for creating WinHelp (.hlp), HTML Help (.chm), a printed manual and online documentation (on a web site) from the same source, from start to finish. Can import help files created with another tool.

 2)   Pocket CHM Pro 5.9
Pocket CHM Pro is an authoring tool for Help document authors, technical writers, and developers to create online help. Drag a folder containing HTML files and drop it onto Pocket CHM Pro, then click "Compile to CHM". How simple it is!