"react vs vue vs svelte vs solid-js — who's actually winning?" This tool answers it. Fetches daily downloads from api.npmjs.org (CORS-enabled, no auth) and overlays up to 6 packages on one inline SVG chart. No chart library. ~300 lines of vanilla JS. The scale + tick math is pure and gets 17 unit tests.

Why DIY?

I wanted:

Pick arbitrary packages, compare side-by-side

Switch the time range instantly