WebCrusher – Optimize Websites
Finally there is a piece of software that appears for the MacOS first. WebCrusher is designed to optimize load times for your webpages and you may find that many of the features would directly relate to your websites also.
You can see the features from this page: http://www.ragesw.com/products/optimize-web-sites/screenshots/0/
You can download a free version before you decide whether you want to buy a license which would cost you $49.95 at this location: http://www.ragesw.com/products/optimize-web-sites/download/.