5 Free eBook Reader Software
1, xCHM

CHM is one of the most popular eBook formats presently, although you can read chm documents in Windows with the Microsoft HTML Help Executable( hh.exe ) shipped with Windows, it does not offer you the option to zoom in / out or customize the font, so you might need a third-party chm reader.

xCHM is a free, lightweight, open source and cross-platform chm viewer which is built upon CHMLIB, it allows you to browse a chm file through the contents tree or index, where it excels is that it allows to customize the font family and font size of both normal font and fixed font.

xCHM supports Windows, Mac OS X and Linux, its Windows edition is portable.

xCHM is a free download available from SourceForge.net.

2, ExtraChm

ExtraChm is a Windows program created to view chm file, it allows to zoom in or out the view, increase or decrease the font size, bookmark current page or selected text, save current page as html or text file, decompile the entire file to individual html pages.

ExtraChm works on most popular versions of Windows including but not limited to Windows 7, Windows XP, it supports both 32-bit and 64-bit systems.

ExtraChm is a 2.52MB download available from CNET and http://www.extrachm.com/.

3, Kchmviewer

Kchmviewer is a free and open source chm( Microsoft Compiled HTML Help ) viewer and converter, using it you can open, browse, print any chm file and convert it to separate html files.


Kchmviewer supports Windows, Mac OS X and Linux.

Kchmviewer is a free download available from SourceForge.

4, Martview

Martview is a free, cool and easy operating PDF reader which is designed to make your reading life more comfortable, convenient, and simple.


Martview works on 32 bit and 64 bit Windows and iPad.

Martview is a 24.62MB download available from CNET and the developer’s website.

5, CoolReader

CoolReader is a free, open source, good-looking, portable and cross-platform eBook reader/viewer program developed by Vadim Lopatin, it offers you the ability to read your favorite books on both handheld and desktop devices.


CoolReader works on Windows 7, Windows XP, Android, Linux, etc.

CoolReader is a 5.47MB download available from SourceForge.net.