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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.
Docsify.js - A magical documentation site generator.
CHM Editor - Best solution to edit CHM files
GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
Kchmviewer - Kchmviewer is a free, open-source CHM (MS HTML help) and EPUB viewer for Unix, Mac and Windows...