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)   Abracadabra Instant Manual 2.156
A versatile, cost effective solution for the production of manuals and "how to" instructions for any computer based task by technical support engineers, system administrators, IT help desk staff, software trainers or anyone who manages software.

 3)   AnetHelpTool 6.10
AnetHelpTool is WYSIWYG HelpFile authoring system for creating Win/HTML/Java Help files, RTF Manuals and Web sites. It provides an easy and pleasant development process, which saves time and increases your help-writing efficiency.