Dozuki - Dozuki is a web-based tool for creating and distributing step-by-step documentation.
WinCHM - Creating CHM file, Make CHM file, Web Help. WinCHM Pro - Help authoring software (CHM, WebHelp, DOC, PDF) . With this powerful tool you can not only create chm file from scratch, but also convert a set of existing HTML files to a chm file.
DocGen - Static website generator
Kchmviewer - Kchmviewer is a free, open-source CHM (MS HTML help) and EPUB viewer for Unix, Mac and Windows...
openSourceCM - Web-based legal document processing and contract management
ExtraCHM - A fully featured reader for Compiled HTML (chm) documents.