ExtraCHM
Kchmviewer
WinCHM
Read CHM
GnoCHM
CHM Editor
ChmSee
KEL CHM Creator
EverDev
ExtraCHMI recently needed a website and they were able to deliver in 13 days, I got a link to a trello board where i was able to submit requests immidiately!
Kchmviewer - Kchmviewer is a free, open-source CHM (MS HTML help) and EPUB viewer for Unix, Mac and Windows...
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.
Read CHM - Read CHM is ultimate CHM (Compiled HTML Help) file reader.
GnoCHM - GnoCHM is a CHM file viewer. It is designed to integrate nicely with Gnome.
CHM Editor - Best solution to edit CHM files
ChmSee - ChmSee is an HTML Help viewer ( chm ) for Unix/Linux.