Chmox is described as 'free (of charge), open source application for OS X which lets you read Windows Help Files (CHM files)' and is an app in the Office & Productivity category. There are more than 10 alternatives to Chmox for Windows, Linux, Mac and PortableApps.com. The best alternative is xchm, which is both free and Open Source. Other great apps like Chmox are Kchmviewer (Free, Open Source), WinCHM (Paid), HelpScribble (Paid) and CHM Decoder (Free).
xCHM is a cross-platform GUI front-end to chmlib, with borrowed bits from Pabs' chmdeco project. Originally written for UNIX systems (Linux, *BSD, Solaris), xCHM has been since ported to Mac OS X and Windows.
Kchmviewer is a free, open-source CHM (MS HTML help) and EPUB viewer written in C++ for Unix, Mac and Windows systems. Unlike most existing CHM viewers for Unix, it uses Trolltech Qt widget library, and could optionally be compiled for better KDE integration.
WinCHM - Help authoring software (CHM,WebHelp,Single HTML - Word, PDF) WinCHM is a very easy-to-use help authoring tool. Not needing to learn too much, you can be master of creating HTML help(CHM), Web help, PDF manual and Word documents.
CHM Decoder may decompile your CHM file (Compiled Windows HTML Help) or e-book and extract all source files. This tool free for use and work easily and quickly. Want to convert CHM to HTML and view that in your PocketPC or in your web pages? CHM Decoder can help to you.
Whether you need to create technical documentation for online Help, software and API documentation, policy & procedure manuals, knowledge bases or user guides, MadCap Flare allows you to create, manage and publish content to a variety of formats, including print, online...
CHM Maker can easily make chm-files. CHM-files can store many html-pages in one file. It is more convenient to store one file instead a lot of independent html-pages. This program has unique features which you will not find in the other chm-making programs.