KeyTools is freeware. You can use KeyTools as a CHM decompiler or CHM encoder.
It is a set of utilities for managing the WinHelp and HTML Help systems on your computer.
Use KeyTools to extracts the source files from a compiled HTML Help (.chm) or compiled Internet Explorer (.its) file.
About KeyTools Portable
Website: www.keyworks.net
Password: www.thinstallsoft.com
KeyTools.Portable_ThinstallSoft.zip | 307 KB
@ThinstallSoft.com | KeyTools 1.0.8312.0 Portable Download Page