Iconoir

Iconoir is a comprehensive library of free, open-source icons designed for modern digital projects. It provides over 1,600 icons that are available in multiple formats including plain SVG, React and React Native components, Flutter packages, and Figma and Framer libraries. The icons are completely free to use, with no premium tiers or required sign-ups, making them suitable for personal and commercial projects under the MIT license. The project is community-driven, with new icons added regularly based on user contributions and requests.

The library stands out for its focus on developer and designer experience. Icons can be browsed and downloaded directly from the website, and the site includes customization options to adjust the optical size and stroke weight to match your project's design system. The code packages are well-documented and maintained, with over 109,000 monthly downloads for the React package alone. Iconoir positions itself as a free alternative to paid icon services like Noun Project and Flaticon.

Iconoir is ideal for UI/UX designers who need a consistent set of icons for prototyping in Figma, and for front-end developers building applications with React, Vue, Flutter, or other modern frameworks. Product teams working on design systems will find the library particularly useful for establishing a cohesive visual language without licensing costs. The open-source nature of the project also makes it a good fit for developers who want to contribute to the icon set or modify icons for specific needs.