Prototype is a javascript framework which aims to ease development of dynamic web applications.
http://www.prototypejs.org
JavaScript Libraries and Functions · JavaScript Library
Get access to data on 2,714,152 websites that are Prototype Customers. We know of 724,808 live websites using Prototype and an additional 1,989,344 sites that used Prototype historically and 269,948 websites in the United States.
Get a list of 2,714,152 websites using Prototype which includes location information, hosting data, contact details, 724,808 currently live websites and an additional 739,060 domains that redirect to sites in this list. 1,989,344 sites that used this technology previously and 269,948 websites in the United States currently using Prototype.