Legend State

Legend List is a performance-focused list library used in T3 Code to improve rendering and scrolling on mobile, web, and Electron.

FlashList is a list library for React Native. It is described as the default list for many projects and is maintained by Shopify, including for critical compatibility fixes.

Generative Loaders is an accessible React component library for loading states in generative interfaces. It provides TextLoader for responses that grow as streamed tokens or chunks arrive, InlineLoader for buttons and status rows, and ImageLoader for image-generation placeholders. TextLoader keeps the existing text prefix stable and animates only newly appended content. The components support named animation variants, configurable speed, color, size, pause state, CSS classes, and accessible labels; the package includes a stylesheet and supports React 18 and newer.

React Native Reanimated is an animation and interaction library created by Software Mansion. Its repository also contains React Native Worklets, which enables multithreaded JavaScript execution in React Native applications. Reanimated and Worklets are distributed under the MIT License; Reanimated 4.x and Worklets support the New React Native architecture and the three latest React Native versions.

loadersz is a framework-agnostic, dependency-free browser library of Canvas loading animations, distributed as a native Web Component with an imperative TypeScript API. It provides 150 motion states, including working, searching, connecting, solving, and racing, and supports configurable size, speed, density, color, theme, pausing, and reduced-motion behavior. The root import registers a switchable <loadersz-loader> element, while individual state entry points such as loadersz/racing include the Canvas core and one geometry builder for smaller fixed-state bundles. The API can also attach a fixed or switchable loader controller to an application-owned canvas and supports lifecycle methods such as setOptions and destroy. Typed integration adapters are provided for React, Vue, Svelte, and Angular; plain HTML, Lit, Solid, and Qwik can use the native element directly. The library pauses in hidden tabs, respects prefers-reduced-motion by default, and caps Canvas device-pixel ratio at two. The package has no regular runtime dependencies, and its repository is licensed under the MIT License.