Help to RTF - Help to RTF's converts Windows helpfiles into RTF-formatted document files compatible with Word. The converted RTF documents include the associated BMP, WMF, SHG and HPJ files.
HelpBreeze - A WinHelp, HTMLHelp and HTML help authoring program.
HelpHikes Pro - Create detailed, non-trivial help files for Windows. Drag and drop links between your topics and test them at design time. Manage big help projects easily with the unique hypertext folder-based approach.
Helpmatic Pro - WinHelp and HTML help authoring tool for creating professional help files quickly. FAQs, reviews, download trial, ordering information, and upgrades.
HyperText Studio - A visual HyperText authoring package which makes it easy to create and manage Windows Help files, Web sites and HTML Help files.
Instant Help Pro - A generator and editor for WinHelp and HTML Help. It automatically creates the help system and updates the source files and project files of a Visual C++ Project.
Sevensteps - Development tool delivers plain HTML and WinHelp from one XML source. Free trial version available.
Software Interphase - Authoring system including ForeHelp, Help Magician Pro, and WinHelp Sorcerer.