CHM Reader Pro is described as 'is can read CHM file and Convert CHM to PDF'. There are six alternatives to CHM Reader Pro for a variety of platforms, including Mac, Linux, Windows, iPhone and iPad. The best alternative is xchm, which is both free and Open Source. Other great apps like CHM Reader Pro are Clearview (Paid), Kchmviewer (Free, Open Source), Read CHM (Free) and Enolsoft CHM View (Paid).
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.
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. What's special with Clearview reader?
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.
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 view reading. Sidebar to show CHM file Contents, Index and Search results.
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 relevance. - Back/Forward - Text zoom - Continuous reading with Page down/Page up - Lion compatibility