HTTrack is an Offline browser. It lets you download web pages to the hard drive to surf the afterwards without having to be connected to Internet.
HTTrack can download a whole web site from Internet. It downloads HTML pages, images, directories and other files to your PC.
HTTrack keeps the links structure from the original site and it lets you surf the downloaded site as it was the original one. By just opening a page from the downloaded site you’ll get to surf the web you’ve downloaded as if you were online.
HTTrack lets you restart downloads from the sites.
HTTrack is very customizable by letting you optimize the downloads from web sites.