Here is Pike Webservers usage in the World according to Netcraft. We have 3 family :

• Spinner (the father of Roxen and Caudium)
• Roxen family which have Roxen
• Roxen Challenger mostly version 1.x
• Roxen (Webserver in general and 2+ versions)
• Caudium

Because Spinner webservers number are too low, they are not represented on this graphic.