Browse free open source User Interface (UI) software and projects for Mobile Operating Systems below. Use the toggles on the left to filter open source User Interface (UI) software by OS, license, language, programming language, and project status.
https://github.com/PopcornTimeTV/PopcornTimeTV
Innovative user interfaces made easy
Java interface to OpenCV, FFmpeg, and more
Full fledged GUI integration for the Android screen mirroring system
F-Droid client with Material UI
An open-source keyboard for Android which respects your privacy
iOS 14.0-15.7.1 & 16.0-16.1.2 MacDirtyCow ToolBox
Rainbow Brackets for IntelliJ based IDEs/Android Studio/HUAWEI DevEco
A cross-platform UI framework for .NET
A privacy-friendly Twitter frontend for mobile devices
Optimized UI components for Firebase
Powerful menu bar manager for macOS
A complete native navigation solution for React Native
The UI component explorer, develop, document, & test React, Vue, etc.
Quickly reproduce the dropdown UIPickerView / ActionSheet
RecyclerView extension library which provides advanced features
Bootstrap style widgets for Android, with Glyph Icons
DivKit is an open source Server-Driven UI (SDUI) framework
An awesome, fully responsive jQuery slider plugin
Flutter app for collection of UI in a UIKit
The smallest header-only GUI library(4 KLOC) for all platforms
PagingKit provides customizable menu UI
A cross-platform Reddit client built in SwiftUI
UI framework designed for theming
JavaScript range slider with multi-touch and keyboard support