Enfold Proxy Limited
Starting with version 7.1, Enfold Systems has created a "limited" version of Enfold Proxy to allow Plone administrators to freely and more easily deploy Plone with Microsoft IIS on Windows.
Enfold Proxy is the fast, easy & affordable way to speed up Plone and many other Web applications running with Microsoft Internet Information Services (IIS).
The "limited" version is free to anyone and can be upgraded to the "full" version which enables Plone performance enhancements through advanced caching and load balancing functionality.
"By making Enfold Proxy Limited free to use, we have greatly reduced the friction to deploy Plone on the Windows platform in a best practice configuration." - Alan Runyan, President