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React is a JavaScript library for building user interfaces.

Slint is an open-source declarative GUI toolkit to build native user interfaces for Rust, C++, JavaScript, or Python apps.

You are looking at the now inactive repository for Vue 2. The actively maintained repository for the latest version of Vue is vuejs/core.

A cross-platform GUI library for Rust focused on simplicity and type-safety. Inspired by [Elm].

A simple cross-platform C++ library for terminal based user interfaces!

Library for building powerful interactive command line applications in Python

Terminal UI library with rich, interactive widgets — written in Golang

NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.

Python GUIs for Humans! Create any GUI simple or complicated in a way that's intuitive. Launched in 2018.

A modern and customizable python UI-library based on Tkinter

Browser support includes every sane browser and IE7+. (Granted you polyfill the functional Array methods in ES5)

Maintenance status: The xi-editor project is currently discontinued. Although we will happily accept bug fixes, no new features are currently planned. You may be interested in the Lapce editor, which can be considered a spiritual successor to the xi-editor.