Electron
Build cross platform desktop apps with web technologies
18 Alternatives To Electron
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Apache Cordova
Platform for building native mobile applications using HTML, CSS and JavaScript
B4X
Cross platform development tools for native iOS, Android, desktop and server applications.
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DeskGap
Framework for building cross-platform desktop apps with web technologies (JavaScript, HTML and CSS).
FLTK
Fast Light Toolkit - Fast Light Toolkit (FLTK)
Flutter by Google
Build beautiful native apps in record time í ½íº
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GTK
GTK+ is a multi-platform toolkit for creating graphical user interfaces.
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JavaFX
JavaFX is the next step in the evolution of Java as a rich client platform.
Lara
Lara Web Engine is a C# Web UI framework supporting web component development and reactive programming. - integrativesoft/lara
PhoneGap
Easily create apps using the web technologies you know and love: HTML, CSS, and JavaScript.
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Proton Native
A React environment for cross platform native desktop app
Qt
C++
Quasar Framework
SPA front-end on steroids.
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React Native
A framework for building native apps with React
Vuido
Build native desktop applications using Vue.js
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Xamarin
Create iOS, Android and Mac apps in C#
wxWidgets
wxWidgets: Cross-Platform GUI Library