jQuery Migrate is the more common of the two in our index: it runs on 6,281 websites against 63 for NProgress, and 10 sites use both. Counts come from real scans, not vendor claims.
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.
NProgress is a JavaScript library that displays a nanoscopic progress bar at the top of websites or web applications. It includes trickle animations to indicate loading activity, enhancing user experience by showing that content is being loaded.
10 sites run both jQuery Migrate and NProgress. That is 16% of the sites using NProgress, 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.