Here is some more recent data (02/03/09): http://blog.creonfx.com/javascript/mootools-vs-jquery-vs-prototype-vs-yui-vs-dojo-comparison-revised http://blog.creon

Here is some more recent data (02/03/09): http://blog.creonfx.com/javascript/mootools-vs-jquery-vs-prototype-vs-yui-vs-dojo-comparison-revised http://blog.creonfx.com/javascript/mootools-vs-jquery-vs-pro... Unfortunately that article doesn't test jQuery 1.3, but you can find 1.3 benchmarks here: http://docs.jquery.com/Release:jQuery_1.3#Performance http://docs.jquery.com/Release:jQuery_1.3#Performance