Who?Prototype core team consists of web developers from all around the world (USA, Canada, Austria, UK...) - Sam Stephenson, Thomas Fuchs, Justin Palmer, Andrew Dupont and others.
Why?What makes this library so good?
- published as single 120kB file
- lincense allows free use in almost any project
- easy to use, simplifies many standard tasks
- standard compliant, supports all current browsers
- good documentation (e.g. official api docs, tutorials or Using Prototype by Sergio Pereira)