Top UI-FRAMEWORK GitHub Repositories & Tools (2026)

🌼 🌼 🌼 🌼 🌼  The most popular, free and open-source Tailwind CSS component library

Toasts and popups library written with SwiftUI

DSL Framework consisting of a DSL Engine and a Data-Binding Library used in Glimmer DSL for SWT (JRuby Desktop Development GUI Framework), Glimmer DSL for Opal (Pure Ruby Web GUI), Glimmer DSL for LibUI (Prerequisite-Free Ruby Desktop Development GUI Library), Glimmer DSL for Tk (Ruby Tk Desktop Development GUI Library), Glimmer DSL for GTK (Ruby-GNOME Desktop Development GUI Library), Glimmer DSL for XML (& HTML), and Glimmer DSL for CSS

Swift 3D Game Engine for Windows, macOS, iOS, Linux

Generic Linked Data browser and UX component framework. Apache license.