jQuery is 15k when zipped. The minified version before gzip is closer to 55 k. Prototype, when zipped, is 22 k -- just checked on a server I'm running. They'

jQuery is 15k when zipped. The minified version before gzip is closer to 55 k. Prototype, when zipped, is 22 k -- just checked on a server I'm running. They're closer than you think :) *edit - that's for version 1.51... 1.6 when minified and gzipped by web server is 23 kb. Not a huge difference, but you get the point.