Easy way to back up sites

I use this to download whole websites (usually course websites with many links to external hosts). The settings are easy to manage, yet you have a lot of options in order to minimize unnecessary donwloads, getting banned, etc. Works better than “httrack” which has a horrible interface (on Linux, anyway). $5 is cheap.

Update for March 2015: Developer keeps posting updates that improve the app.

DRE9000 about SiteSucker