Unfortunatly, Not that I know of.  Quickbooks doesn't make it easy for you to access the data that is for sure.  I don't understand why make all these Web based/XML request response mechanisms and force you to use something like the web connector to fire it.

It may be the case that you can call the web service from a web application but I haven't played with it enough to be sure but everything I have seen advertised makes you use the web connector.  Let me know if you find anything out, would love to hear about it.