#2 Sep 09, 2007 10:41
That's the first time I heard of Prototype, nice website for them tho. Will check it out later.
But related on topic, I am using either or both DojoTools and jQuery.
Recently found YUI (Yahoo! UI), and lol, how much I hate it because I'm developing my own, can't believe Yahoo! already thought of it. I mean, the "complete" package, especially Modular-CSS. (But I don't agree with most of their implementations...)
Try DojoTools, it's the longest running JS Lib if I'm not mistaken.