Download from HAR is a Windows application that can download content from a HAR file.
Downloading websites for the sake of cloning them is unethical and immoral... This tool was created to play around with GPL-licensed websites, such as http://dhmholley.co.uk/civclicker.html, which does not have an easily accessible open source repository.
Scroll down for the download link...
https://www.virustotal.com/en/file/bda0e6a172713e5c959027c78402ee697f95fd8a75fb2519ded7fa5fb188fcae/analysis/1410708838/ (Note: the Bkav scan is a false-positive, its as a result of the packaging method that I took [python -> cython -> exe with modules -> bundled exe])