Next.js

React is a JavaScript library for building web and native user interfaces. It uses declarative views that update the appropriate components when application data changes, and lets developers compose encapsulated, state-managing components into larger interfaces. React code can use JSX, an HTML-like syntax for defining interface elements, although JSX is optional. The library is designed for gradual adoption, can render on the server with Node, and supports mobile applications through React Native. Its core repository is developed openly on GitHub under the MIT license.

NotionNext is an open-source website system built with Next.js and the Notion API. It uses a Notion workspace as the source for articles, categories, tags, menus, and pages, then publishes that content as blogs, portfolios, knowledge bases, navigation sites, product websites, and other searchable sites. The repository supports theme-based customization and deployment on platforms such as Vercel without a self-hosted server, with features including custom domains, SEO, sitemaps, RSS, comments, analytics, search, advertising, and email subscriptions. It is maintained by the notionnext-org GitHub organization and is released under the MIT License.

npmx.dev is an open-source web frontend for browsing the npm registry, developed as a fast, modern alternative interface rather than a replacement for the registry. It provides package search and details, README and metadata views, source-code browsing with syntax highlighting and line permalinks, generated API documentation when available, version diffs, changelogs, publish timelines, package comparisons, and shareable URL-driven views. It also surfaces dependency and package-health information such as outdated dependencies, OSV vulnerability warnings, provenance indicators, license and install-script warnings, install size including transitive dependencies, download statistics, repository signals, and JSR availability. The interface supports dark and light modes, localization across dozens of locales including right-to-left languages, keyboard workflows, screen readers, and package, team, and organization administration through the local npm CLI.

Webiny is an open-source, self-hosted content platform and headless CMS that runs serverlessly inside the user's AWS account. Its TypeScript framework provides a GraphQL API, custom content models, field-level permissions, localization, versioning, lifecycle hooks, dependency injection, admin UI and infrastructure extension points, and supports AI-assisted development through an MCP server. The platform includes a visual website builder with a Next.js SDK, a file manager for digital assets, publishing workflows with drafts, reviewers, scheduled publishing and audit trails, and native multi-tenancy with isolated data, users, assets and permissions. It runs on AWS Lambda, DynamoDB, S3 and CloudFront, with infrastructure provisioned through Pulumi; optional OpenSearch and VPC configurations are also supported. Webiny is extended through code and can be deployed using open-source infrastructure templates rather than managed servers.

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.