HelpNDoc - What is HelpNDoc ? Easy to use yet powerful help authoring environment which can generate various documentation formats from a single source.

HelpSmith - HelpSmith is a help authoring tool to create CHM HTML help files, manuals, and PDF documents.

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.

Adobe RoboHelp - Adobe RoboHelp empowers organizations to deliver engaging help and policy content across mobile devices, formats, and platforms.

KEL CHM Creator - KEL CHM Creator a is flexible, powerful and free (freeware) CHM creator that uses Microsoft® HTML Help Workshop to combine your HTML files into one compressed and compact CHM (Compiled Help Modules…

MadCap Flare - Documentation for Any Audience, Language or Format