CHM Editor - Best solution to edit CHM files
Airim - Show personalised FAQs before live chat
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.
HelpSite - HelpSite is a simple service to help your setup the perfect support centre or help site.
ExtraCHM - A fully featured reader for Compiled HTML (chm) documents.
Manula - Manula is an online software for creating user manuals.