Lucide
lucide.devIcons
A community-run fork of Feather that's become the default icon set for React and Next.js apps — clean, consistent, tree-shakable.
Other products from Icons
Made by the Tailwind team, so they slot into a Tailwind UI with zero visual mismatch — a smaller set, but exactly right for most apps.
The icon font everyone's seen a thousand times — still the safest bet when you need one huge, reliable set with zero surprises.
Six weights per icon, from thin to fill, make this the pick when one family needs to scale from tiny UI chrome to bold marketing pages.
Skip picking one icon set entirely — Iconify gives one API and component that pulls from 200,000+ icons across every major library.