Portal-enabling non-portlet web apps

I’ve been involved in number of portal projects this year and one of the problems that all my customers complain about is the inability to integrate non-portlet based webapps into their portals. I just ran across this open source PortletBridge project which promises to fix that problem. Their description of the project is

The PortletBridge Portlet project creates a JSR-168 Portlet that can proxy and rewrite content from a downstream web site. Currently, the portlet supports:

Proxy configuration (including NTLM and Basic authentication)

NTLM and Basic authentication as preferences

Using an xsl stylesheet to rewrite the content from the downstream site

Proxying of remote resources (e.g. images, flash etc.)