Bootstrap

Core Framework is a visual CSS framework and design-token builder for the web, WordPress, and Figma, developed by CoreBunch. It provides a visual editor for semantic colors, light and dark values, generated shades, fluid typography and spacing scales, layouts, reusable selectors, components, utility classes, and design primitives such as radii, borders, shadows, opacity, filters, and transforms. The system calculates responsive type and spacing scales from minimum and maximum values, scale ratios, and naming conventions, then generates standards-based production CSS. Projects can be previewed in the editor and their readable or minified stylesheets can be copied, exported, or downloaded, or saved as portable .core files. The same open-source codebase supports a standalone web app, WordPress, Figma, Gutenberg, Bricks, and Oxygen integrations. The editor is local-first, and the web app, plugin, integrations, and builder add-ons are available under the MIT license without paid feature gates.

Sandpack is a React component toolkit for embedding live-running code editing and preview experiences in web applications. It runs JavaScript and Node.js applications in the browser and can be used for interactive documentation, coding environments, low-code tools, generated website previews, and embedded playgrounds. Sandpack provides templates containing project files and dependencies, custom setup for changing dependencies or file structure, configurable built-in components, themes, and composable components and hooks for custom interfaces. It uses CodeMirror for editor functionality, supports npm dependencies, hot module reloading, error overlays, caching, and Node.js execution through its Nodebox runtime. The Sandpack Client package exposes a framework-agnostic bundler protocol, and the toolkit supports frameworks including Next.js, Remix, Vite, and Astro.

BoardUI is a React design system for agentic interfaces and dashboards, combining AI-product components such as chat, thinking indicators, streaming agent logs, task lists, web-search trails, composers, and an agent runtime with dashboard components such as tables, charts, forms, cards, navigation, authentication, and design tokens. Its CLI copies individual components and their dependencies, or the complete free catalog, into a Next.js project as source files rather than installing a runtime dependency, so developers can modify the code directly. The system uses React Aria Components for accessible controls, Tailwind CSS v4, semantic design tokens, light and dark theme classes without runtime CSS, and Figma-based typography and styling rules. The repository includes a working AI chat application with a streaming chat endpoint and an agent runtime that accepts provider keys for supported services or an OpenAI-compatible server, reads keys server-side, and streams replies to the chat UI. It also provides an MCP server for browsing and installing components, along with agent rules specifying design tokens, type scale, and conventions.

Interior Dev is an open-source collection of copy-paste React micro-interactions for the brief period after a click. Each component is distributed as a single file rather than a package and exports a headless `useX` hook containing the behavior without class names alongside an `X` styled example component. The components address layout-preserving transitions, animation restarts, resizing labels, loading jumps, interrupted drags and gesture recovery when focus is lost, keyboard interaction, and `prefers-reduced-motion` behavior; reduced-motion mode preserves the information while skipping the animation. The only dependency is `motion`, and the documentation site can be run with Bun.