1)   WinCHM [help authoring tool] 3.5
Help authoring software. Create Help file, Create Web-based help, Create CHM file, Create printable pages, Create PDF manual easily and quickly. Two versions: WinCHM Pro and WinCHM (Standard)

 2)   HelpSmith 1.4
The HelpSmith's ultimate toolkit with its visual approach takes the process of creating CHM HTML Help files and Printed Manuals for your software to a new quality level.