Vivalidi.net Interlinked Proxy
I have yet to see a good personal proxy server allowing for page monitoring and automatic (or as directed from the browsing module) snapshot/capture along with cataloging features in a end user friendly fashion. Since, in today's world there is no guarantee that whatever was on whatever website will be there tomorrow. So, some level of data capture would be an ideal companion to the product. It would also allow the offloading of various features separate from presentation and site interaction to a separate module altogether., caching can speed up performance. This would also allow the user to host their own sync services via the proxy module. *You could even sell a developer's module for reviewing the details of a page's operation.