ISAPI_Rewrite is Apache .htaccess mod_rewrite compatible URL rewriter for Microsoft IIS. It is used for search engine optimization, to reverse proxy another server's content, stoping hotlinking and strengthening server security.
DragonWAF is a host-based web application firewall, targeted to filter and prevent malicious coding attacks aiming at small-to-medium business and mid-to-large web sites running Microsoft IIS 7 Web Servers.