Radix Icons is a solid choice — 345 icons, MIT licensed. But it is not the only one, and it is not the best fit for every project. Below are 8 open-source alternatives ranked by how directly they answer the reasons people look for a replacement: more coverage, more visual range, or a simpler license.
| Library | Icons | Variants | License | React package | Compare |
|---|---|---|---|---|---|
| Heroicons | 1,297 | outline and solid | MIT | @heroicons/react |
vs Radix |
| Lucide Icons | 1,979 | outline only | ISC | lucide-react |
vs Radix |
| Octicons | 929 | outline only | MIT | @primer/octicons-react |
vs Radix |
| Feather Icons | 286 | outline only | MIT | react-feather |
vs Radix |
| Phosphor Icons | 9,198 | thin, light, regular, bold, fill and duotone | MIT | phosphor-react |
vs Radix |
| Tabler Icons | 6,324 | outline only | MIT | @tabler/icons-react |
vs Radix |
| Material Design Icons | 14,001 | outlined, rounded, sharp, two-tone and filled | Apache 2.0 | @mui/icons-material |
vs Radix |
| Material Symbols | 18,547 | variable weight, fill, grade and optical size axes | Apache 2.0 | @material-symbols/svg-400 |
vs Radix |
Dense product UI: data tables, command palettes, context menus, settings panels, and anywhere you need an icon to occupy as little space as possible while staying legible.
The 345-icon count is small, so you will hit gaps quickly in a large product. Heroicons also ships a drawn 16px size with many more icons; Lucide covers far more concepts at 24×24.
Start from the constraint that actually binds your project. If it is coverage, sort by icon count — the difference between a 286-icon set and a 20,000-icon set is whether you ever have to design a glyph yourself. If it is visual range, look at variants per concept: a library with six weights lets you build hierarchy without a second dependency. If it is legal simplicity, avoid CC BY sets where attribution is impractical.
All of these libraries are indexed on IconStash, so you can search one concept and compare how every set drew it before committing.
The usual reasons are coverage, style range and licensing. Radix Icons ships 345 icons in outline only. If you need concepts it does not cover, or several visual weights from one set, or a license without attribution, one of the alternatives below will fit better.
Every library listed here is open source and free for commercial use. Most are MIT, ISC or Apache 2.0, none of which require attribution. The exception in this list is any CC BY 4.0 set, which does require a visible credit — check the license column in the table above before committing.
Technically yes, but mixing sets usually looks inconsistent because each one draws to its own grid and stroke weight. If you need to fill a gap, prefer pulling a single icon and redrawing it to match your primary set.