There are many JavaScript frameworks that a web developer can chose to implement a website or a Rich Internet Application. The most famous are without doubt jQuery, Scriptaculous and MooTools. I’ve started programming some years ago using Scriptaculous, than I switched to MooTools and definitively to jQuery in the last two years. I like jQuery for its simplicity and potentials and it’s now my favorite framework to implement JavaScript interactions on my web pages. And you, which framework do you prefer? Why?