Help Authority is the only program that lets you create online help files from any point in your program. It helps you write multiple help topics, assign them to different areas, and link to them from anywhere, down to the smallest grid and column
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.
Nevron Help Assistant is a revolutionary MS Visual Studio plug-in, which can seamlessly integrate with MS Help 2 projects and deliver rich help authoring functionality. All Nevron components for .NET are documented with this plug-in.
Help Development Studio is a popular, full-featured, stand-alone help authoring tool, which is designed to create WinHelp, HTML Help, and Web Help files from the same source. Download your free trial copy now!
Visagesoft for Windows? Help Designer is a stand alone and true WYSIWYG Windows help authoring tool. It provides all the basic features of a Help authoring software
MGTEK Help Producer is a help authoring tool that allows you to create Microsoft HTML Help 1.0 files, Microsoft Help 2.0 help files, and web based content from a Microsoft Word document.