ExtraChm

ExtraChm is a pretty small utility that can be used in order to view CHM files, as well as edit their contents with a minimum amount of effort.

Easy-to-use environment

The interface you are brought to presents a structured and simple design, as it consist of a menu bar, a navigation panel, several buttons and a pane in which to view the actual contents of the CHM file. Some Help contents are provided by the developers, thus ensuring the all types of users can work with it, including those with little or no previous experience with computers.

Use multiple tabs in the same session

First and foremost, you should know it is possible to open multiple tabs in the same time, thus enabling you to check out multiple Help topics in the same time. Moreover, you can increase or decrease the size of the text, zoom in and out of pages, create and manage bookmarks, as well as enable a full screen.

Read texts out loud and use a search function

A customizable text-to-speech function is integrated, enabling you to read out loud specified parts of text using one of the provided voices. You can also enable text highlighting while speaking, adjust the volume and speed of the voice with the help of two slider bars and change the format.
You can use a search function which lets you only look for titles, as well as get partial matches, you can view a list of all bookmarks and you can decompile CHM files, so as extract all the contents to a specified output directory and create an HTML file to view it in any web browser.

Conclusion

Although a bit simple, ExtraChm proves to be an efficient and reliable piece of software when it comes to viewing and editing CHM Help files. The interface is intuitive, all jobs are completed in due time and the amount of resources required to work properly is going to be minimal at all times.