Microsoft Compiled HTML Help (CHM) is a common format for e-book and online documentation.
To view CHM file in Ubuntu, you need to have a CHM viewer installed. GnoCHM is one of the CHM file viewer, designed to integrate nicely with Gnome, using PyCHM.

GnoCHM can be installed by pasting the following command in the terminal.
sudo apt-get install gnochm
The shortcut will appear in Applications > Accessories menu as “CHM Viewer”.

This article discuss a simple way to view CHM file. If you know a better CHM viewer other than GnoCHM, please leave a comment.

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