jQuery is the more common of the two in our index: it runs on 21,813 websites against 5 for CamanJS, and 5 sites use both. Counts come from real scans, not vendor claims.
CamanJS is a JavaScript library designed for image editing directly on the browser, allowing manipulation of canvas elements.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
5 sites run both CamanJS and jQuery. That is 100% of the sites using CamanJS, the smaller of the two.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.