Shoes is the best little GUI toolkit for Ruby. This gem is currently a placeholder until we properly gemfiy Shoes.

Ruby/GTK2 is a Ruby binding of GTK+-2.x.

qtbindings provides ruby bindings to QT4.x. It is derived from the kdebindings project.

Glimmer is a Ruby DSL Framework for Ruby GUI and More, consisting of a DSL Engine and a Data-Binding Library (including Observer Design Pattern, Observable Model, Observable Array, and Observable Hash). Used in Glimmer DSL for SWT (JRuby Desktop Development GUI Framework), Glimmer DSL for Web (Ruby in the Browser Web Frontend Framework), Glimmer DSL for LibUI (Prerequisite-Free Ruby Desktop Development GUI Library and Winner of Fukuoka Ruby Award Competition 2022 Special Award), Glimmer DSL for Tk (Ruby Tk Desktop Development GUI Library), Glimmer DSL for GTK (Ruby-GNOME Desktop Development GUI Library), Glimmer DSL for FX (FOX Toolkit Ruby Desktop Development GUI Library), Glimmer DSL for WX (wxWidgets Ruby Desktop Development GUI Library), Glimmer DSL for Swing (JRuby Swing Desktop Development GUI Library), Glimmer DSL for JFX (JRuby JavaFX Desktop Development GUI Library), Glimmer DSL for XML (& HTML), and Glimmer DSL for CSS.

Glimmer DSL for LibUI (Fukuoka Award Winning Prerequisite-Free Ruby Desktop Development Cross-Platform Native GUI Library) - Winner of Fukuoka Ruby Award Competition 2022 Special Award (http://www.digitalfukuoka.jp/topics/187?locale=ja) - No need to pre-install any prerequisites. Just install the gem and have cross-platform native GUI that just works on Mac, Windows, and Linux! Glimmer DSL for LibUI aims to provide declarative DSL syntax that visually maps to GUI control hierarchy, convention over configuration via smart defaults, automation of low-level details, requiring the least amount of syntax possible to build GUI, bidirectional data-binding, custom control/window support, and application/gem/window/control scaffolding. If you liked Shoes, You'll love Glimmer!

FXRuby is the Ruby binding to the FOX GUI toolkit.

Green Shoes is one of colorful Shoes, written in pure Ruby with Ruby/GTK2.

The nifty Ruby gui toolkit. An easy to use gui toolkit built with scripting in mind.

Enables JavaFX with FXML controllers and application in pure ruby

Ruby bindings to libui

Tk interface module using tcltklib.

wxRuby3 is a Ruby library providing an extension for the wxWidgets C++ UI framework

Glimmer DSL for SWT (JRuby Desktop Development Cross-Platform Native GUI Framework) is a native-GUI cross-platform desktop development library written in JRuby, an OS-threaded faster JVM version of Ruby. It includes SWT 4.30 (released on December 1, 2023). Glimmer's main innovation is a declarative Ruby DSL that enables productive and efficient authoring of professional-grade desktop applications by relying on the robust Eclipse SWT library, with the familiar native look, feel, and behavior of GUI on Mac, Windows, and Linux. Glimmer additionally innovates by having built-in data-binding support, which greatly facilitates synchronizing the GUI with domain models, thus achieving true decoupling of object oriented components and enabling developers to solve business problems (test-first) without worrying about GUI concerns, or alternatively drive development GUI-first, and then write clean business models (test-first) afterwards. Not only does Glimmer provide a large set of GUI widgets, but it also supports drawing Canvas Graphics like Shapes and Animations. To get started quickly, Glimmer offers scaffolding options for Apps, Gems, and Custom Widgets. Glimmer also includes native-executable packaging support, sorely lacking in other libraries, thus enabling the delivery of desktop apps written in Ruby as truly native DMG/PKG/APP files on the Mac, MSI/EXE files on Windows, and DEB/RPM files on Linux. Glimmer was the first Ruby gem to bring SWT (Standard Widget Toolkit) to Ruby, thanks to creator Andy Maleh, EclipseCon/EclipseWorld/RubyConf speaker. If you liked Shoes, You'll love Glimmer!

Ruby FFI bindings for the OSX Cocoa API

a simple HTML GUI for Ruby

Ruby/GTK3 is a Ruby binding of GTK+-3.x.

Fidgit is a GUI library built on Gosu/Chingu

Glimmer DSL for Tk (Ruby Tk Desktop Development GUI Library) - Ruby DSL for Tcl/Tk with bidirectional/unidirectional data-binding support.

Glimmer DSL for Opal on Rails (Pure Ruby Web GUI and Auto-Webifier of Desktop Apps)

Comfortably talk with Tcl/Tk using FFI.

wxRuby allows the creation of graphical user interface (GUI) applications via the wxWidgets library. wxRuby provides native-style GUI windows, dialogs and controls on platforms including Windows, OS X and Linux.

The fxruby library is an excellent wrapper for the FOX toolkit. However, it reflects the C++-ness of FOX, rather than being more Ruby-like. As such, creating composed objects with it tends to be rather ugly and cumbersome. fxruby-enhancement is a wrapper for the wrapper, to "rubyfy" it and make it more easy to use for Rubyists. fxruby-enhancement is basically a DSL of sorts, and every effort has been taken to make it intuitive to use. Once you get the hang of it, you should be able to look at the FXRuby API documentation and infer the DSL construct for fxruby-enhancement.

Glimmer DSL for GTK - Ruby-GNOME Desktop Development GUI Library - Supports all GTK widgets and Cairo graphics