Open Source JavaScript Web Development Frameworks

Neiki's Page Editor is a lightweight visual page and CMS editor built with pure JavaScript and zero dependencies. It transforms any container into a complete editing environment with accurate HTML and CSS rendering inside an isolated iframe, ensuring pages look exactly as they will in a real browser. The editor includes a modern toolbar, source code view, image and table editing, drag-and-drop tools, autosave, fullscreen mode, localization, and five built-in themes. It supports full HTML documents, external stylesheets, custom CSS, database integration through async load/save handlers, editable regions, plugins, and built-in sanitization with an optional PHP helper for server-side security. Perfect for CMS platforms, website builders, admin panels, and custom web applications that require a lightweight, dependency-free visual editor.

Neiki's Code Editor is a lightweight embeddable code editor built as a native Web Component using vanilla JavaScript. It runs without dependencies or build tools and can be dropped into any website via a single script tag. The editor provides a modern development experience with syntax highlighting, themes, line numbers, search, auto-indentation, and fullscreen support. Designed for flexibility and performance, it uses Shadow DOM for style isolation and supports multiple languages including JavaScript, HTML, CSS, JSON, and Markdown. It is fully customizable through attributes, CSS variables, and a simple JavaScript API, making it suitable for documentation, demos, and embedded development tools.