Open Source Mobile Operating Systems User Interface (UI) Software
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User Interface (UI) Software for Mobile Operating Systems
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.
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1
FlorisBoard
An open-source keyboard for Android which respects your privacy
FlorisBoard is a free and open-source keyboard for Android 7.0+ devices. It aims to be modern, user-friendly, and customizable while fully respecting your privacy. Currently in early beta state. -
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guiscrcpy
Full fledged GUI integration for the Android screen mirroring system
A simple, pluggable, graphical user interface for the fastest Android screen mirroring software, scrcpy. guiscrcpy is a multiplatform, ready-to-use GUI layer for Android to PC screen mirroring written in the advancing programming language python3 for the most award-winning open-source android screen mirroring system. -
3
Popcorn Time for iOS
https://github.com/PopcornTimeTV/PopcornTimeTV
PopcornTimeTV was an Apple TV, iPhone and iPad application to torrent movies and tv shows for streaming. Since 2016, this project has grown exponentially - both in its user base and in its functionality. However, the team size has gone the other way. We went from having 13+ developers on the team to 1 developer and 1 designer, both of whom have lives and projects outside of Popcorn Time. We have decided that we have given our all to this project and it's time for us to move on to pursue greater things. There is no doubt that this comes with a heavy heart as we have learned so much from this project and watched it grow from this simple torrenting app that could only play 720p video, to what it is today. All that being said, we do not want this project to just die after we leave. The size of the project might be a bit daunting to an unseasoned developer but the app is extremely stable and packed with almost every feature you could need. -
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Kivy
Innovative user interfaces made easy
Kivy is an open source, cross-platform UI framework that lets you develop applications that make use of innovative, multi-touch user interfaces. Written in Python with a graphics engine built over OpenGL ES 2, Kivy supports various input devices and protocols, and gives you access to over 20 widgets that are all highly extensible and have built-in multi-touch support. You can run the same codebase on Mac, Windows, Linux, Android and iOS. Kivy is 100% free and open source with a professionally developed and used toolkit, as well as a stable framework and well-documented API, so you can be confident in using it in a commercial product. -
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5
Airtest
UI Automation Framework for Games and Apps
¿Airtest provides cross-platform APIs, including app installation, simulated input, assertion and so forth. Airtest uses image recognition technology to locate UI elements so that you can automate games and apps without injecting any code. Airtest cases can be easily run on large device farms, using the command line or python API. HTML reports with detailed info and screen recording allow you to quickly locate failure points. NetEase builds Airlab on top of the Airtest Project. AirtestIDE is an out-of-the-box GUI tool that helps to create and run cases in a user-friendly way. AirtestIDE supports a complete automation workflow. Poco adds the ability to directly access object(UI widget) hierarchy across the major platforms and game engines. It allows writing instructions in Python, to achieve more advanced automation. -
6
Cowabunga
iOS 14.0-15.7.1 & 16.0-16.1.2 MacDirtyCow ToolBox
A Jailed toolbox application for iOS 14.0-15.7.1 and 16.0-16.1.2 using CVE-2022-46689. Enable Notifications and set Location Services to Always to keep the app running in the background, keep the dock and folder background hidden, and prevent some sound effects from reverting. Some changes are permanent on iOS 14.0-14.8.1. IPA available in the Releases section. -
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Droid-ify
F-Droid client with Material UI
A quick material F-Droid client. -
8
Fritter
A privacy-friendly Twitter frontend for mobile devices
Fritter is an open-source frontend for Twitter, focusing on giving you the best experience and keeping your data private, local, and in your hands. No tracking, with all data local. Save tweets locally and offline. See what's trending in the world. Light and Dark themes, protect your eyes. Follow and group accounts. View results without needing to vote. Find users and tweets. -
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Cinder
Community-developed library for professional-quality creative coding
Cinder is a free and open source library for professional-quality creative coding in C++. Cinder is available under the BSD License for macOS and Windows. The latest version is 0.9.2. To keep up-to-date with Cinder’s development, consider working from the github repository directly. Cinder is a C++ library for programming with aesthetic intent - the sort of development often called creative coding. This includes domains like graphics, audio, video, and computational geometry. Cinder is cross-platform, with official support for macOS, Windows, Linux, iOS, and Windows UWP. Cinder is production-proven, powerful enough to be the primary tool for professionals, but still suitable for learning and experimentation. Full keyboard, mouse (including scroll wheel), window, and file drag and drop. -
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10
Intellij rainbow brackets
Rainbow Brackets for IntelliJ based IDEs/Android Studio/HUAWEI DevEco
Compatible with IntelliJ IDEA, PhpStorm, WebStorm, PyCharm, RubyMine, AppCode, CLion, Gogland, DataGrip, Rider, MPS, Android Studio, HUAWEI DevEco Studio, DataSpell, Code With Me. Supports Java, Scala, Clojure, Kotlin, Python, Haskell, Agda, Rust, JavaScript, TypeScript, Erlang, Go, Groovy, Ruby, Elixir, ObjectiveC, PHP, HTML, XML, SQL, Apex language, C#, Dart, Pug/Jade, Bash, Vue.js, C# Razor Pages, GLSL(the OpenGL Shading Language), Go Template, C++, C, etc. Eliminate context switching and costly distractions. Create and merge PRs and perform code reviews from inside your IDE while using jump-to-definition, your keybindings, and other IDE favorites. If you didn't like the built-in colors, or want some new color but don't want to try out and pick colors. Please use color generator. And you can use the color generator and config your number of colors at the same time. -
11
JavaCV
Java interface to OpenCV, FFmpeg, and more
JavaCV uses wrappers from the JavaCPP Presets of commonly used libraries by researchers in the field of computer vision (OpenCV, FFmpeg, libdc1394, FlyCapture, Spinnaker, OpenKinect, librealsense, CL PS3 Eye Driver, videoInput, ARToolKitPlus, flandmark, Leptonica, and Tesseract) and provides utility classes to make their functionality easier to use on the Java platform, including Android. JavaCV also comes with hardware accelerated full-screen image display (CanvasFrame and GLCanvasFrame), easy-to-use methods to execute code in parallel on multiple cores (Parallel), user-friendly geometric and color calibration of cameras and projectors (GeometricCalibrator, ProCamGeometricCalibrator, ProCamColorCalibrator), detection and matching of feature points (ObjectFinder), a set of classes that implement direct image alignment of projector-camera systems (mainly GNImageAligner, ProjectiveTransformer, ProjectiveColorTransformer, ProCamTransformer, and ReflectanceInitializer), and more. -
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Flutter WeChat Assets Picker
An image picker (also with videos and audios) for Flutter
An image picker (also with videos and audio) for Flutter projects based on the WeChat's UI. The package is using photo_manager for asset implementation, extended_image for image preview, and provider to help manage the state of the picker. Current WeChat version that UI is based on: 8.x UI designs will be updated following the WeChat update in any time. To take a photo or a video for assets, please check the detailed usage in the example, and head over to wechat_camera_picker. The package is a standalone extension that needs to be used with the combination. -
13
Stevia
Concise Autolayout code
Stevia is part of freshOS iOS toolset. Try it in an example App! Xibs and storyboards are heavy, hard to maintain, and hard to merge. They split the view concept into 2 separate files making debugging a nightmare. There must be a better way. By creating a tool that makes Auto Layout code finally readable by a human being. By coupling it with live code injection such as injectionForXcode we can design views in real-time. View layout becomes fun, concise, maintainable, and dare I say, beautiful. In the project folder, you can find an example of a typical login view laid out in both native and Stevia for you to understand and compare the two approaches. Stevia enables you to write readable Auto Layout code. It does so by tackling the 3 main components of layout: view hierarchy, layout and styling. -
14
Storybook
The UI component explorer, develop, document, & test React, Vue, etc.
Storybook is an open-source tool for building UI components and pages in isolation. It streamlines UI development, testing, and documentation. Storybook provides a sandbox to build UIs in isolation so you can develop hard-to-reach states and edge cases. Implement components and pages without needing to fuss with data, APIs, or business logic. Render components in key states that are tricky to reproduce in an app. Save use cases as stories in plain JavaScript to revisit during development, testing, and QA. Use addons to customize your workflow, automate testing, and integrate with your favorite tools. Stories are a pragmatic, reproducible way to keep track of UI edge cases. Write stories once then reuse them to power automated tests. Whenever you write a story you get a handy test case. Quickly browse stories to make sure your UI looks right. Pinpoint UI changes down to the pixel by comparing image snapshots of stories. -
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Best Flutter UI Templates
completely free for everyone. Its build-in Flutter Dart
This repository is a large collection of high-quality Flutter UI templates covering a wide variety of app categories. It includes templates for e-commerce, fitness, hotel booking, chat/messaging, finance, and more. Each template provides ready-made screens with polished visuals, iconography, and color schemes designed for production-level apps. The layouts are responsive and customizable, helping developers save time when prototyping or launching apps. The project is structured modularly so developers can pick and choose specific screens or flows instead of using the entire template. It’s one of the most comprehensive UI repositories for Flutter, serving both as a design inspiration library and a starting point for actual app development. -
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E-commerce Complete Flutter UI
The FlutterShop template makes it easier to develop an e-commerce app
This project is a complete e-commerce application UI built with Flutter, showcasing every essential screen in a modern shopping experience. It includes layouts for onboarding, product listings, categories, detailed product pages, carts, checkout flows, and user profile sections. The UI follows clean, professional design patterns with attention to consistent spacing, typography, and component reuse. Interactive elements like carousels, tabs, and responsive grids are integrated to simulate real-world app behavior. Though it doesn’t implement backend functionality, the structure allows developers to easily plug in APIs or Firebase for a production-ready app. Its purpose is both to provide inspiration for design and to act as a boilerplate for developers starting an e-commerce project. -
17
InstagramKit
The unofficial Instagram iOS SDK
An extensive Objective C wrapper for the Instagram API, completely compatible with Swift. The framework is built atop AFNetworking’s blocks-based architecture and additionally, parses JSON data and creates model objects asynchronously so there’s absolutely no parsing on the main thread. It’s neat, fast and works like a charm. InstagramKit uses UICKeyChainStore as an optional sub-dependency for Keychain access. If you opt to use the optional pod, InstagramKit resumes your authenticated sessions across App launches, without needing any additional code. InstagramAppClientId is your App's Client Id and InstagramAppRedirectURL, the redirect URI which is obtained on registering your App on Instagram's Developer Dashboard. The redirect URI specifies where Instagram should redirect users after they have chosen whether or not to authenticate your application. -
18
zld
A faster version of Apple's linker
For large projects, the linking phase (explanation) can significantly increase incremental build times. This project is a fork of the Apple linker, ld. It is a drop-in replacement that can substantially speed things up. It all depends on your risk tolerance and how much you value the speedup in incremental build time. When linking takes more than one second, I'd cut that time in half as the estimated time with this new linker. If that difference is compelling to you, then it'd be worth trying out. Personally, I'd use it in projects with an existing link time of even 500ms (but I am an impatient tinkerer). zld is forked from the most recently open-sourced version of ld. It's used by thousands of developers across many of the largest apps in the world. Without a few optimizations around hashing, it would produce byte-for-byte the same executables as the open-source one. -
19
Avalonia
A cross-platform UI framework for .NET
Avalonia is a cross-platform UI framework for dotnet, providing a flexible styling system and supporting a wide range of Operating Systems such as Windows, Linux, macOS. Avalonia is mature and production-ready. We also have in beta release support for iOS, Android and in early stages support for browsers via WASM. Avalonia is open source, free to use, and always will be. Clone the source today to dig deeper. The free VS extension provides everything needed to start, including a XAML previewer. JetBrains deep understanding of Avalonia shines through with rich Rider and R# support. Deploy to the platforms you care about with ease. Leverage existing knowledge, code and packages to kickstart your project. Get the support your project needs with one of our commercial support agreements. Help you can count on. JetBrains delivers huge productivity gains for Avalonia developers. -
20
DivKit
DivKit is an open source Server-Driven UI (SDUI) framework
DivKit is an open source Server-Driven UI (SDUI) framework. It allows you to roll out server-sourced updates to different app versions. Also, it can be used for fast UI prototyping, allowing you to write a layout once and then ship it to iOS, Android, and Web platforms. DivKit is an excellent choice to start using server-driven UI in your project because it can be easily integrated as a simple view in any part of your app. At the starting point, you don’t need a server integration. You can include all JSON on the client-side to try it in a real-world application. Also, we’ve made a sandbox for you to experiment with. You can try different samples in the web editor and see the results on the web or in the Android demo app, both of which are available on Google Play. We’ll publish the iOS demo app shortly. The UI in the demo can be updated live: the sandbox connects to the demo app via web sockets. -
21
Flutter Responsive Admin Panel
Responsive Admin Panel or Dashboard using Flutter
This is a responsive admin/dashboard UI template built in Flutter. It is designed to work across platforms (web, desktop, mobile) and offers prebuilt UI elements (charts, tables, cards, etc.) so developers can use it as a backend UI scaffold. -
22
Flutter UI Challenges
Updated for Flutter 3.x ** 100+ Professional UI implementations
flutter_ui_challenges is a collection of Flutter UI designs and implementations showcasing various layouts, patterns, and widget usages. It serves as a playground and reference for developers wanting to learn how to replicate complex mobile UI elements in Flutter. The repository includes dozens of screens like onboarding flows, e-commerce pages, profiles, dashboards, and animated components. Each example demonstrates how to combine core Flutter widgets with creative styling and transitions to achieve polished results. It’s particularly valuable for beginners who want to see hands-on approaches to real-world UI problems. The project doubles as inspiration and a teaching resource, with each implementation structured clearly for experimentation and modification. -
23
Material SearchBar Android
Material Design Search Bar for Android
This beautiful and easy-to-use the library will help to add Lollipop Material Design SearchView in your project. Create a custom style and use one of the provided styles as the parent. Simply set/change these colors(or some) and you have your custom style. -
24
React Native Elements
Cross-Platform React Native UI Toolkit
A React Native framework for making cross-platform applications. As a cross-platform UI Toolkit, you can now use RNE on the web & share your codebase between your React Native + React web apps. RNE components are rendered perfectly on browser. You can achieve this to target iOS, Android and Web by collaborating RNE and React Native for Web. Consistent design across android, iOS, and web. 30+ components designed to save development time. Built completely in TypeScript. Starting your react native app has never been easier. Supports Expo too! Easily style any of our components just the way you want. 100% built by the community. We're here because we love open source. -
25
Appz
Launch external apps, and deeplink, with ease using Swift
Kitz aims to make your development life a bit easier by reducing the boilerplate code you have to write. Just focus on building amazing new features! All Kitz are shipped with released apps. They also have full test coverage, minimal dependencies, and are collaboration friendly! In case the app can't open the external application, it will fall-back to a web URL that is guaranteed to succeed by opening the browser. It was crucial to make sure the library can scale as the number of supported apps increase. Therefore, each supported app is implemented in isolation in a separate file. The API has been carefully designed to make the most out of auto-complete features, so you don't even have to peak into any docs or code! To make the specs as transparent as possible, the library has tests to make sure every external application action has tests with the expected results.
