React vs Solid: Which UI Library?
React renders through a virtual DOM with a vast ecosystem; Solid uses the same JSX with fine-grained signals and no virtual DOM.
React and Solid both use JSX, but React re-runs components and diffs a virtual DOM, while Solid runs each component once and updates the DOM with fine-grained signals. That makes Solid one of the fastest frameworks in benchmarks with smaller output, while React brings the largest ecosystem, tooling, and hiring pool. React wins on maturity and ecosystem; Solid wins on raw performance and a leaner runtime with familiar JSX.
| React | Solid | |
|---|---|---|
| Rendering | Virtual DOM diffing | Fine-grained signals |
| Re-renders | Component re-runs | Runs once, surgical updates |
| Performance | Good | Top-tier |
| Ecosystem | Largest | Smaller |
| Best for | Ecosystem, hiring | Performance with familiar JSX |
Use case and ecosystem
React suits teams needing the biggest ecosystem, the most libraries, and the largest talent pool. Solid suits React-fluent teams wanting better performance and a smaller runtime without abandoning JSX, accepting a younger ecosystem.
Performance and build
Solid's fine-grained reactivity avoids re-render overhead and ranks near the top of benchmarks; React's concurrent features help complex UIs. Both build with Vite and test on managed runners, where faster runners shorten build and test cycles.
The verdict
Want the largest ecosystem, libraries, and hiring pool: React. Want top-tier performance and a lean runtime while keeping JSX: Solid. React is the pragmatic default; Solid is compelling when performance and familiar syntax both matter.