Solar Icons is a solid choice — 7,410 icons, CC BY 4.0 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 |
|---|---|---|---|---|---|
| Phosphor Icons | 9,198 | thin, light, regular, bold, fill and duotone | MIT | phosphor-react |
vs Solar |
| Huge Icons | 5,115 | six coordinated styles | MIT | hugeicons-react |
vs Solar |
| Remix Icon | 3,244 | line and fill | Apache 2.0 | remixicon |
vs Solar |
| Fluent UI Icons | 20,170 | regular and filled | MIT | @fluentui/react-icons |
vs Solar |
| Lucide Icons | 1,979 | outline only | ISC | lucide-react |
vs Solar |
| Heroicons | 1,297 | outline and solid | MIT | @heroicons/react |
vs Solar |
| Tabler Icons | 6,324 | outline only | MIT | @tabler/icons-react |
vs Solar |
| Feather Icons | 286 | outline only | MIT | react-feather |
vs Solar |
SaaS dashboards, admin templates, and marketing sites that want a premium, contemporary look rather than a neutral system feel. Duotone styles work especially well in empty states and feature cards.
Solar is CC BY 4.0, so it requires attribution — if that is a problem, Phosphor (MIT) offers a comparable six-weight range and Huge Icons (MIT) offers six styles of its own.
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. Solar Icons ships 7,410 icons in six coordinated styles. 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.