PWA is the more common of the two in our index: it runs on 11,779 websites against 295 for PyScript, and 75 sites use both. Counts come from real scans, not vendor claims.
Progressive Web Apps (PWAs) are web apps built and enhanced with modern APIs to deliver enhanced capabilities, reliability, and installability while reaching anyone, anywhere, on any device, all with a single codebase.
PyScript is a python script that can be run in the browser using a mix of Python and standard HTML.
75 sites run both PWA and PyScript. That is 25% of the sites using PyScript, 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.