Iconoir

Quick summary of Iconoir

Iconoir (iconoir.com) is one of the biggest open-source icon libraries — pitched as 'one of the biggest open source icons libraries' with 1500+ free icons under MIT license. Created and maintained by Luca Burgio (Italian designer + developer) as community contribution. 1500+ free SVG icons under MIT license, consistent design language (24x24 grid + 1.5px stroke), multiple variants (outline + solid versions for many icons), framework packages (Iconoir React, Iconoir Vue, Iconoir Flutter, Iconoir Figma), built-in Figma library + Figma plugin, search + category browsing, no signup required, free for personal + commercial use including client + product work. Distinguished from Lucide (the dominant open-source default in shadcn/ui ecosystem with ~1000+ icons + biggest React community + default in shadcn/ui starter templates) by larger catalogue + multi-framework packages including Flutter + dedicated Figma support, distinguished from Heroicons (Tailwind team's simpler set with two-variant approach + naturally integrated with Tailwind) by larger 1500+ catalogue + framework-agnostic positioning, distinguished from Phosphor (huge library with multiple weights — thin/light/regular/bold/fill/duotone + free + paid Pro) by consistent design language + free across all icons + no paid tier, distinguished from Tabler Icons (largest free icon library at 4000+ icons) by smaller curated catalogue with consistent design language, distinguished from Font Awesome (27k+ icons + comprehensive brand icons + 14-year market position) by open-source community-driven positioning + free MIT licensing across all icons, distinguished from Hugeicons (premium icon library covered earlier) by free + open-source positioning. Completely free + open source under MIT license — no paid tier; Luca Burgio publishes Iconoir openly as community contribution. Best for designers + developers wanting comprehensive free MIT-licensed icon library with consistent design language as alternative to Lucide + Heroicons + Phosphor, developers needing icon library with first-class React + Vue + Flutter package support (Iconoir provides natural integration across these frameworks), designers needing both outline + solid variants of icons from one consistent library, and teams using same icons in Figma designs + code implementation where Iconoir's Figma library + framework packages provide consistency. Skip for the React-first community default with biggest ecosystem (Lucide is the safer choice especially in shadcn/ui projects given community size + Vercel/Next.js integration), for maximum weight variety (Phosphor offers more — thin/light/regular/bold/fill/duotone), for the largest possible free icon count (Tabler has 4000+ free icons), for comprehensive brand icons including Facebook + GitHub + AWS (Font Awesome remains the brand icon workhorse), or for highly-specific aesthetic that Iconoir's design language doesn't match. One of multiple credible alternatives in the 2026 open-source icon library market — for most React projects Lucide remains the safest default given shadcn/ui's dominance, but Iconoir is one of the legitimate alternatives worth evaluating if Lucide's aesthetic doesn't fit your design language; the MIT license + free positioning + multi-framework packages make it a solid choice.