Manumission is a commandline utility which creates HTML Help files. These files are viewable using either Microsoft's help viewer or xchm. No configuration is required, and options default to reasonable values.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.