HTTrack is a free and easy-to-use offline browser utility which acts as a website downloader and a site ripper for copying websites and downloading them for offline viewing.
HTTrack Website Downloader & Site Ripper
HTTrack allows you to download a World Wide Web site from the Internet to a local directory, building recursively all directories, getting all the HTML, images, and other files from the server to your computer.
HTTrack arranges the original site’s relative link-structure, which allows you to simply open a page of the “mirrored” website in your browser, and you can browse the site from link to link as if you were viewing it online.