Top 12 Open-Source Alternatives to GTK

The top open-source alternatives to GTK are Qt, wxWidgets, and Electron. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Qt Landing Page
1

Qt

Powerful, flexible and easy to use, Qt will help you not only meet your tight deadline, but also reduce the maintainable code by an astonishing percentage.
Pricing:
- Open Source
#Development Tools #Rapid Application Development #GUI Frameworks
wxWidgets Landing Page
2

wxWidgets

wxWidgets: Cross-Platform GUI Library
Pricing:
- Open Source
#Development Tools #Rapid Application Development #Cross-Platform Development 6 social mentions
Electron Landing Page
3

Electron

Build cross platform desktop apps with web technologies
Pricing:
- Open Source
#Development Tools #Rapid Application Development #Cross-Platform Development 14 social mentions
FLTK Landing Page
4

FLTK

Fast Light Toolkit - Fast Light Toolkit (FLTK)
Pricing:
- Open Source
#Development Tools #Rapid Application Development #Cross-Platform Development 2 social mentions
Kivy Landing Page
5

Kivy

Open source Python framework for rapid development of applications that make use of innovative user interfaces, such as multi-touch apps. Installation on WindowsInstallation on Windows. Installation; What are wheels .
Pricing:
- Open Source
#Developer Tools #Rapid Application Development #Python Tools 46 social mentions
Flutter.dev Landing Page
6

Flutter.dev

Build beautiful native apps in record time 🚀
Pricing:
- Open Source
#Development Tools #Application Builder #Mobile App Development 340 social mentions
Avalonia Landing Page
7

Avalonia

A multi-platform .NET UI framework
Pricing:
- Open Source
#Development Tools #Rapid Application Development #Cross-Platform Development 117 social mentions
Dear PyGui Landing Page
8

Dear PyGui

Dear PyGui is a simple to use (but powerful) Python GUI framework. Dear PyGui provides a wrapping of Dear ImGui which simulates a traditional retained mode GUI (as opposed to Dear ImGui's immediate mode paradigm).
Pricing:
- Open Source
#IDE #Text Editors #Game Engine
Uno Platform Landing Page
9

Uno Platform

Build Mobile, Desktop and WebAssembly apps with C# and XAML.
Pricing:
- Open Source
#Development Tools #Rapid Application Development #Cross-Platform Development 62 social mentions
JavaFX Landing Page
10

JavaFX

JavaFX is the next step in the evolution of Java as a rich client platform.
Pricing:
- Open Source
#Development Tools #Rapid Application Development #Java 34 social mentions
React Native Landing Page
11

React Native

A framework for building native apps with React
Pricing:
- Open Source
#Development Tools #JavaScript Framework #Javascript UI Libraries 213 social mentions
Sciter Landing Page
12

Sciter

Embeddable HTML/CSS/script engine
Pricing:
- Open Source
#Development Tools #Rapid Application Development #Cross-Platform Development 67 social mentions