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 2,610,460 websites that are Prototype Customers. We know of 1,114,974 live websites using Prototype and an additional 1,495,486 sites that used Prototype historically and 448,246 websites in the United States.
Get a list of 2,610,460 websites using Prototype which includes location information, hosting data, contact details, 1,114,974 currently live websites and 1,495,486 sites that used this technology previously and 448,246 websites in the United States currently using Prototype.