Open-source alternatives to Glimmer

pywebview is a cross-platform desktop GUI framework for Python that renders HTML, CSS, and JavaScript content using the operating system's native web rendering engine. It enables developers to build desktop applications that run on Windows, macOS, and Linux from a single Python codebase, with the web frontend displayed in a lightweight, native window. The framework provides a bidirectional JavaScript-Python bridge for real-time data exchange between frontend and backend, along with the ability to manipulate the Document Object Model directly from Python without writing JavaScript. It includes

An easy to install gem version of the Ruby bindings to Qt

A set of bindings for the GNOME libraries to use from Ruby.

PySimpleGUI is a Python framework used to build graphical user interfaces. It functions as an adapter-based wrapper that maps multiple GUI toolkit APIs into a single unified interface, allowing for backend-agnostic development across tkinter, Qt, or WxPython. The project uses a layout-based UI definition system where visual hierarchies are defined via nested lists rather than coordinate-based placement. It employs an event-driven polling loop and string-based event mapping to associate interface elements with specific user actions. The framework supports cross-framework GUI design and intera

Kdenlive is an open-source non-linear video editing suite designed for digital video post-production. Built on the MLT Framework and utilizing KDE Frameworks for its user interface, it provides a multi-track environment for assembling clips, applying transitions, and rendering final video files. The editor distinguishes itself through a comprehensive set of animation and effect tools, including keyframe-based parameter animation with a visual curve editor for fine-tuning transitions. It supports advanced visual modifications such as clip speed remapping, effect region masking, and the integra

Auto generated Go wrapper for Dear ImGui via cimgui

Ant Design is an enterprise-grade component library and design system framework built for developing complex, data-heavy web applications. It provides a comprehensive collection of pre-built, state-driven interface elements that map data properties to rendered components, ensuring consistent interaction patterns and visual language across large-scale projects. The library distinguishes itself through a robust styling architecture that utilizes design tokens and hierarchical configuration providers to propagate global settings like themes, locale, and layout direction. By employing component-l

ChatUI is a React conversational UI library and framework designed for building messaging interfaces. It provides a set of components for creating conversation flows, including message bubbles, input areas, and structured message hierarchies. The library distinguishes itself through specialized AI agent interface features, such as the visualization of an agent's reasoning process and simulated typing animations that render text character-by-character. It also includes a system of pre-designed conversational card templates for rendering banners, selection lists, and questionnaires within a cha

Ant Design Mobile is a mobile UI component library and design system built for React. It provides a collection of pre-styled interface elements and standardized UI blocks used to create consistent, responsive user interfaces for mobile web applications. The framework focuses on mobile web design and frontend interface engineering, providing tools to implement interaction patterns tailored for touch-based browsing. It ensures a uniform look and feel across different mobile browsers and handheld device screens. The library incorporates responsive layout systems and CSS-variable-based theming.

Ariakit is a headless component library and accessible UI component toolkit. It provides a set of unstyled web components with built-in accessibility patterns to ensure that screen readers and keyboard navigation function correctly. The project includes an adaptive color engine that calculates high-contrast text and dynamic surface colors for light and dark modes. It also features a concentric layout engine for computing nested padding, margins, and border radii for circular interface elements, alongside a design token system for managing global CSS variables. The toolkit covers broad capabi

Purely native C++ cross-platform GUI framework for Android and iOS development. https://www.boden.io

Recompose is a suite of toolsets for implementing higher-order component composition, context extraction, render optimization, and external state integration. It provides a library of utilities to wrap components in reusable logic and behavioral layers, allowing developers to chain functional wrappers and reduce nesting within a component tree. The project focuses on the composition of functional wrappers to inject properties and behavior into components. It includes a set of helpers for extracting values from component context and passing them as direct properties, as well as tools for integ

This project is a Material Design UI library and Angular component framework. It provides a collection of reusable UI building blocks and development tools for creating consistent web applications that follow Material Design specifications. The framework includes an accessible web component library that uses headless directives and WAI-ARIA patterns to ensure user interface elements meet web accessibility standards. It also provides specialized integration wrappers for embedding and managing interactive Google Maps and YouTube video playback. The project supports custom UI component developm

Cross-platform C++20 GUI framework featuring MVVM architecture, reactive capabilities, and scalable, accelerated GPU rendering.

Bindings for SDL2 in Rust

Vuera is a compatibility layer and interoperability bridge designed to enable shared rendering between Vue and React. It provides a set of wrappers that allow components from one framework to be embedded and rendered inside the other. The project focuses on cross-framework component integration, allowing for the coexistence of both frameworks within a single project. This supports the use of shared UI libraries across different ecosystems and enables incremental migration between Vue and React. The system handles the transfer of nested elements by mapping slots and children properties betwee

Bindings for SDL in Rust

Carbon is an enterprise design system that provides a comprehensive collection of reusable UI components, design tokens, and guidelines for building professional web applications. It functions as a CSS framework that enforces a unified design language across projects through standardized typography, spacing, and color palettes. The system utilizes a platform-agnostic design token system to maintain visual consistency across different technologies. This includes centralized management of brand colors, motion easing curves, and a curated library of accessible SVG icons. The framework covers a

Chakra UI is a design system component library and styling framework that provides a foundation for building consistent, accessible web interfaces. It functions as a centralized theme configuration engine, using a design-token-driven architecture to manage visual properties like color palettes and spacing rules as a single source of truth across an entire application. The framework distinguishes itself through a type-safe styling utility that automatically generates TypeScript definitions from theme configurations, ensuring accurate property referencing and editor autocompletion. It employs a

Eel is a framework for creating desktop applications using a Python backend and a web-based frontend. It acts as a bidirectional bridge between Python and JavaScript, allowing developers to build graphical user interfaces with HTML and JavaScript that communicate with local system logic. The project facilitates two-way communication by enabling the exposure of Python functions to the browser and allowing the backend to trigger JavaScript functions. It uses a local server to render web interfaces as standalone desktop windows and provides tools to bundle the Python code and web assets into a s

a modern C++ GUI library

A free and open source framework for building powerful, fast, elegant 2D and 3D apps that run on macOS, Windows, Linux, iOS, Android, and web with a single Go codebase, allowing you to Code Once, Run Everywhere.

CoreUI React.js UI Components. CoreUI for React.js replaces and extends the Bootstrap javascript. Components have been built from scratch as true React.js hook components, without jQuery and unneeded dependencies.

Elements is a C++ GUI library and component-based UI framework used for building desktop user interfaces. It features a retained-mode layout engine that manages the positioning, sizing, and layering of elements within a window. The framework functions as a cross-platform window manager, handling application event loops and embedding graphical views into native platform windows. It allows for the creation of custom widgets by composing basic primitive elements and alignment wrappers. The system supports responsive layout organization through the use of tiles, grids, and flows. It also provide

A framework(library) for building GUI applications in Go without any need of Cgo, Stay positive :)