vscode-codicons

This is the actual icon font that powers VS Code itself. Every icon you see in the sidebar, tabs, and status bar comes from this package. You get 400+ icons designed specifically for code editors and dev tooling, available as a font or individual SVGs. Drop it into any web app or Electron project and your UI instantly looks like it belongs in the VS Code ecosystem.

It's fully free under CC-BY-4.0. No paid tier, no catches on usage. You can use it in commercial projects as long as you include attribution.

The catch: this is a design asset, not a general-purpose icon library. If you need icons for e-commerce, social media, or marketing pages, look elsewhere. It's laser-focused on developer tooling iconography. Also, the Handlebars build tooling is a bit dated. You'll likely just grab the compiled font or SVGs directly.

If you need a broader icon set, Lucide (lucide-icons/lucide) covers general-purpose use cases. Heroicons is another solid option for UI work. But for anything dev-tool adjacent, Codicons is the standard.