Kchmviewer - Kchmviewer is a free, open-source CHM (MS HTML help) and EPUB viewer for Unix, Mac and Windows...
Dozuki - Dozuki is a web-based tool for creating and distributing step-by-step documentation.
xchm - xCHM is a cross-platform GUI front-end to chmlib, with borrowed bits from Pabs' chmdeco project.
VKS Lite - Go paperless with the VKS work instruction software. Create step-by-step instructions with pictures, videos, PDFs and more! Version control, mass updates...
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.
Nomuda VisualFactory - VisualFactory MES digitizes work instructions, enhances manufacturing efficiency and improves product traceability.