Mac OS X application Sitesucker downloads entire websites from the internet, much like WinHTTrack. Sitesucker can download web sites, including the web pages, images, backgrounds and other files. Downloading a site is as easy as entering the URL and hitting return.
Sitesucker is a smart downloader – you can download files intact, or choose to localize the downloaded files, so that you can browse a site offline. It can also save download options to a file – so that you can perform the download when and wherever you want.

Sitesucker can also pause and resume downloads. Suppose you choose the Save command while SiteSucker is downloading, it will pause the download and save its status. You can restart the download with the Resume option.
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That’s a good one. Could you suggest something similar to that for Windows?
WinHTTrack is a good choice for Windows.