jQuery Migrate is the more common of the two in our index: it runs on 5,453 websites against 5 for CamanJS, and 1 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.
Query Migrate is a javascript library that allows you to preserve the compatibility of your jQuery code developed for versions of jQuery older than 1.9.
1 site runs both CamanJS and jQuery Migrate. That is 20% 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.