xchm

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.

Free Open Source Mac OS X Windows Linux

Kchmviewer

Kchmviewer is a free, open-source CHM (MS HTML help) and EPUB viewer for Unix, Mac and Windows systems.

Free Open Source Mac OS X Windows Linux

Chmox

Chmox is a free (of charge), open source application for OS X which lets you read Windows Help Files (CHM files).

Free Open Source Mac OS X

Clearview

Easy-to-use tabbed style ebook reader, equipped with library shelf, supports popular ebook formats as PDF, EPUB (DRM free), CHM, and MOBI. You can make annotations, insert bookmarks, and do searching freely.

Commercial

iChm

iChm for Mac, iPhone/iPod Touch [for Mac: * Fully built with Cocoa. No ugly window and slow rendering. * Tab browsing * Search. Result sorted by relevance. * Text...

Free Mac OS X

WinCHM

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...

Commercial Windows

GnoCHM

GnoCHM is a CHM file viewer. It is designed to integrate nicely with Gnome. It uses PyCHM, a Python package that exports the CHMLIB API. Features are: *...

Free Open Source Linux

Read CHM

Read CHM is ultimate CHM (Compiled HTML Help) file reader. Its FREE!!! Get it now and spread the word, Its fantastic CHM reader application. Simple and intuitive tab...

Free Mac OS X

ExtraCHM

A fully featured reader for Compiled HTML (chm) documents.

Freemium Windows

CHM Reader Pro

CHM Reader Pro is can read CHM file and Convert CHM to PDF.

Free Mac OS X

Enolsoft CHM View

Enolsoft CHM View is a CHM (Microsoft Compiled HTML Help) file reader for Mac OS X. Features - View CHM files with ease - Tab browsing - Search. Result sorted by...

Commercial Mac OS X iPhone iPad

chmviewkit

CHM View kit is a simple and fast CHM viewer.

Free Open Source Linux