HTTrack is a tool that supports offline Download any website content, including the complete HTML code, images and any other files on the offline target server, also you can say to mirror the target website locally, when you browse offline without network, and most importantly also update the recently updated content on the target website.

HTTrack does not support real time audio although you can browse offline. data, but does not support real-time audio/video, and Java scripts, small programs, etc. Such software is not very useful, but the site has been maintained and updated, the current latest version is 3.48-22 released in 2016, for users with special requirements, is not very easy to find.