Its too bad this never got more traction, I always thought the ability to define roles was an incredibly smart and useful feature. Defining 'authorizer' and 'filter' allows you to stack all sorts of independent apps - responder provides data, filter does rendering, authorizer is SSO, for example.
Wprth mentioning that Openbsd does have fastcgi support in it's httpd server, but only supports the responder role
Yes, but still just a responder role. Not many servers support all the roles, which is the part I find most useful. I only recall hearing of one implementation from a well known company that supported filters and authorizers, and was from a while back; I also haven't looked into it in a number of years and really can't remember
Wprth mentioning that Openbsd does have fastcgi support in it's httpd server, but only supports the responder role