Solid
A declarative JavaScript library for building user interfaces
...Declarative data: model your state as a system with reactive primitives. Render-once mental model: your components are regular JavaScript functions that run once to set up your view. Automatic dependency tracking: accessing your reactive state subscribes to it. Small and fast. Simple: learn a few powerful concepts that can be reused, combined, and built on top of. Provides modern framework features like JSX, fragments, Context, Portals, Suspense, streaming SSR, progressive hydration, Error Boundaries and concurrent rendering.