CHReader is a Browser software developed by mayakron. After our trial and test, the software is proved to be official, secure and free. Here is the official description for CHReader:

An application, written in Borland Delphi, which compresses a group of related web files (along with images, resources, etc...) to a single compressed archive (whose length can be up to 4 Gb) and let you browse it using your preferred internet browser without even decompressing it (acting as a dedicated web server on port 8078 of your machine). This way you can retrieve very large sites with web spiders and keep them in an optimal space-saving way always ready to be browsed.