CHM Editor - Best solution to edit CHM files
Icecream Ebook Reader - Ebook Reader by Icecream Apps allows to read ebooks in several formats (EPUB, MOBI, FB2 and others). Download EPUB Reader for 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.
Ebook Reader - Ebook Reader-created and published by eBooks.
ExtraCHM - A fully featured reader for Compiled HTML (chm) documents.
calibre - Ebook manager, viewer & converter