Top 12 Open-Source Alternatives to B4X

The top open-source alternatives to B4X are Flutter.dev, Apache Cordova, and React Native. 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.

Flutter.dev Landing Page
1

Flutter.dev

Build beautiful native apps in record time 🚀
Pricing:
- Open Source
#Development Tools #Application Builder #Mobile App Development 340 social mentions
Apache Cordova Landing Page
2

Apache Cordova

Platform for building native mobile applications using HTML, CSS and JavaScript
Pricing:
- Open Source
#Development Tools #JavaScript Framework #Javascript UI Libraries 43 social mentions
React Native Landing Page
3

React Native

A framework for building native apps with React
Pricing:
- Open Source
#Development Tools #JavaScript Framework #Javascript UI Libraries 213 social mentions
Onsen UI Landing Page
4

Onsen UI

HTML5 Hybrid Mobile App UI Framework - work with Angular, React, Vue, Meteor & pure JavaScript. Material & Flat design.
Pricing:
- Open Source
#Development Tools #JavaScript Framework #Javascript UI Libraries 2 social mentions
Electron Landing Page
5

Electron

Build cross platform desktop apps with web technologies
Pricing:
- Open Source
#Development Tools #Rapid Application Development #Cross-Platform Development 14 social mentions
Ionic Framework Landing Page
6

Ionic Framework

A front-end SDK to develop applications with HTML5 , CSS3 and JavaScript.
Pricing:
- Open Source
#Development Tools #JavaScript Framework #Javascript UI Libraries 88 social mentions
MonoDevelop Landing Page
7

MonoDevelop

MonoDevelop enables developers to write desktop and web applications on Linux, Windows and Mac OS X.
Pricing:
- Open Source
#IDE #Text Editors #Software Development
PhoneGap Landing Page
8

PhoneGap

Easily create apps using the web technologies you know and love: HTML, CSS, and JavaScript.
Pricing:
- Open Source
#Development Tools #JavaScript Framework #Javascript UI Libraries 1 social mentions
Codename One Landing Page
9

Codename One

iOS, Android, Windows Phone native app development in Java.
Pricing:
- Open Source
#Development Tools #JavaScript Framework #Javascript UI Libraries
NativeScript Landing Page
10

NativeScript

Build truly native apps with JavaScript
Pricing:
- Open Source
#Development Tools #JavaScript Framework #Javascript UI Libraries 18 social mentions
fastlane Landing Page
11

fastlane

Connect all iOS deployment tools into one streamlined workflow
Pricing:
- Open Source
#Development Tools #Continuous Integration #Application Builder 41 social mentions
Xamarin Landing Page
12

Xamarin

Create iOS, Android and Mac apps in C#
Pricing:
- Open Source
#Developer Tools #App Development #Development Tools 26 social mentions