Open Source Dart Libraries
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Dart Libraries
View 76 business solutionsBrowse free open source Dart Libraries and projects below. Use the toggles on the left to filter open source Dart Libraries by OS, license, language, programming language, and project status.
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PiliPlus
PiliPlus
PiliPlus is an open-source, third-party mobile client oriented around browsing and watching online video content with a focus on a smooth, feature-rich viewing experience. It typically aggregates feeds, categories, and search into a unified interface that makes discovery straightforward for casual use as well as power users. The player experience emphasizes responsive controls, on-screen comments (danmaku) or subtitles where supported, and options for quality selection and caching for offline viewing. Account-centric features such as history, favorites, and following creators are commonly integrated to keep the experience personal and portable across sessions. The project structure favors modularity so that network requests, parsing, and presentation layers remain separable and testable. Its community-driven approach encourages rapid iteration on UI details and playback features while maintaining a familiar, mobile-native feel. -
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Keyviz
Keyviz is a free and open-source tool to visualize your keystrokes
Keyviz is an open-source tool written in Dart/C++ that visualizes your keystrokes and mouse actions in real-time, overlaying them on screen. It’s ideal for screencasts, presentations, livestreams, or instructional videos, showing users exactly what keys or buttons you press, and visually highlights them with customizable styles and filters. -
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Dart Sass
The reference implementation of Sass, written in Dart
Dart Sass is the canonical, fully‑featured official implementation of the Sass stylesheet preprocessor, superseding Ruby Sass. Written in Dart, it emphasizes speed, portability and ease of maintenance. Available as standalone CLI, Dart library, and npm JS distribution, it supports semantic versioning, CSS compatibility, and an embedded API for host integration. -
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Flutter Rust Bridge
Rust binding generator, feature-rich, but seamless and simple
flutter_rust_bridge is a toolchain that generates ergonomic bindings between Rust and Dart/Flutter so you can write performance-critical logic in Rust while building UI in Flutter. It abstracts away the low-level FFI details, letting developers define Rust functions and data structures that are safely callable from Dart. The project supports passing complex types, handling async operations and streams, and integrating with Flutter across mobile and desktop targets. By leaning on Rust’s memory safety and zero-cost abstractions, it enables compute-heavy tasks—parsing, crypto, image/audio processing, and more—without sacrificing Flutter’s developer experience. Build scripts and templates streamline packaging and distribution so the Rust side fits cleanly into CI and multi-platform releases. In practice, teams gain a maintainable way to share one performant Rust core across multiple Flutter apps while keeping the UI reactive and fast. -
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FlutterFire
A collection of Firebase plugins for Flutter apps
FlutterFire is a collection of Flutter plugins that integrate Firebase services into Flutter applications. It provides modular plugins (e.g. firebase_auth, cloud_firestore, firebase_messaging, etc.) such that apps only include what they need. The central plugin is firebase_core, which initializes the Firebase app instance. Through FlutterFire, developers can use authentication, real-time database, Firestore, cloud functions, analytics, messaging, storage, and more from their Flutter code. The project includes tooling (e.g. the FlutterFire CLI) to assist in configuring Firebase projects and managing plugin versions. The goal is to make Firebase a seamless, first-class backend option for cross-platform Flutter apps, handling platform differences (iOS, Android, web) under the hood. -
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Nylo Support
Support library for the Nylo framework
Nylo is a powerful framework for developing mobile apps in Flutter. Out of the box, it comes with a router, secure storage, networking, and more. -
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rust_core
A pure Dart implementation of patterns found in Rust's core library
rust_core is a pure Dart implementation of patterns found in Rust's core library, bringing the power of Rust to Dart. -
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Quiver for Dart
A set of utility libraries for Dart
Quiver is a comprehensive collection of utility libraries for Dart that extends core functionality and simplifies common programming patterns. It provides reusable tools for asynchronous programming, data structures, caching, time manipulation, string utilities, and more. Originally inspired by Google’s internal libraries, Quiver helps developers write cleaner, more expressive, and testable Dart code. Its modular design allows importing only the needed packages, making it both flexible and lightweight. Quiver also includes testing utilities that make it easier to simulate asynchronous behavior, time, and equality checks in unit tests. -
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GetWidget
Most popular and easy to use open source UI library
GetWidget is an open‑source Flutter UI toolkit offering over 1000 ready‑to‑use widgets for mobile and web apps. Maintained by IonicFirebaseApp, it's designed to accelerate UI development, reduce boilerplate, and improve app aesthetics. The library is MIT‑licensed, community‑driven, and features components ranging from buttons and alerts to carousels and loaders. -
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FL Chart
FL Chart is a highly customizable Flutter chart library
fl_chart is a charting library for Flutter that focuses on expressive, highly customizable data visualizations with smooth animations. It offers a broad set of chart types—line, bar, pie, scatter, and radar—each exposed through clear data/option models rather than imperative drawing. Interactive features like touch handling, tooltips, selection/highlighting, and panning help apps present insights rather than static images. The package pays special attention to aesthetics, with options for gradients, curved lines, stacked bars, rounded corners, custom tick formats, and flexible legends. Because it’s built on Flutter’s rendering primitives, it scales crisply on any device and adapts well to layout constraints. Its API is designed so teams can start simple and progressively layer in formatting, interactions, and performance tweaks as dashboards grow in complexity. -
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Fluro
Fluro is a Flutter routing library that adds flexible routing options
Fluro is a lightweight, flexible routing library for Flutter that brings expressive, URL-like navigation to mobile apps. It lets developers define route patterns with path parameters and optional query strings, making it simple to extract dynamic values from navigation paths. The library focuses on clear, centralized route configuration, reducing boilerplate compared to hand-rolled navigation code. It supports custom route transitions so screens can animate in ways that match an app’s brand and motion language. Error handling hooks help capture unknown routes, and developers can funnel users to fallback pages or gracefully redirect. Because it sits close to Flutter’s own navigation mechanisms, it integrates cleanly and remains easy to adopt incrementally. Fluro’s sweet spot is teams that want readable, testable route tables and predictable parameter passing without heavy architectural overhead. -
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Flutter Dojo
A beautiful design and useful project
Flutter Dojo is an educational and practical Flutter UI project that provides a large collection of demo screens, layouts, and component examples designed to help developers learn and experiment with Flutter’s capabilities. Rather than being a traditional component library, it acts as a showcase and playground where developers can explore different UI patterns, animations, and design implementations within a single project. The repository includes numerous real-world interface examples, allowing developers to study how complex layouts and interactions are structured in Flutter applications. It is particularly useful for beginners and intermediate developers who want to improve their understanding of Flutter widgets, layout systems, and state management concepts. The project emphasizes hands-on learning by presenting working examples that can be modified and extended directly. It also demonstrates best practices for organizing Flutter code and structuring scalable UI projects. -
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GSY GitHub App Flutter
GSY Github App is a full-featured open-source cross-platform
GSY Github App is a full-featured open-source cross-platform GitHub client built in Flutter. It covers extensive GitHub functionality—repos, issues, PRs, user data—leveraging modern state management (Redux, Riverpod, Provider), multi-language support, theming, network and database optimizations. Available for mobile and desktop (though mobile is the primary focus). -
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bloc
Predictable state management library that helps implement BLoC design
A predictable state management library that helps implement the BLoC design pattern. The goal of this library is to make it easy to separate presentation from business logic, facilitating testability and reusability. -
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dart pdf
Pdf creation module for dart/flutter
This set of plugins allows Flutter apps to generate and print pdf files to the device printer. This plugin works for iOS and Android. -
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Dart
Dart is a client-optimized language for fast apps on any platform
The Dart SDK, including the VM, dart2js, core libraries, and more. Develop with a programming language specialized around the needs of user interface creation. Make changes iteratively, use hot reload to see the result instantly in your running app. Compile to ARM & x64 machine code for mobile, desktop, and backend. Or compile to JavaScript for the web. Mature and complete async-await for user interfaces containing event-driven code, paired with isolate-based concurrency. A programming language optimized for building user interfaces with features such as sound null safety, the spread operator for expanding collections, and collection if for customizing UI for each platform. A programming language that is easy to learn, with a familiar syntax. Make changes to your source code iteratively, using hot reload to instantly see the effect in the running app. -
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Flutter EasyRefresh
A flutter widget that provides pull-down refresh and pull-up load
flutter_easy_refresh is a refresh widget library for Flutter that supports pull-to-refresh and load-more gestures with highly customizable behavior. It provides multiple built-in refresh headers and footers, including classic, material, ball-beat, and custom animated styles. Developers can easily implement infinite scrolling, lazy loading, and paginated content with fine-grained control over triggers and states. The library emphasizes smooth, adaptive animations and compatibility with slivers, lists, and grids. Because it is extensible, users can design their own refresh indicators to match branding or app style. Its focus is on delivering a responsive, modern UX for content-heavy apps such as feeds, shopping apps, and news readers. -
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Flutter Examples
Simple basic isolated apps, for budding flutter devs
flutter-examples is a repository of standalone example Flutter apps that demonstrate various features, integrations, and UI / functional behaviors in Flutter. It covers many use-cases (navigation, state, HTTP, dependency injection, Firebase, etc.) so that developers can clone, run, and inspect working code to learn how to implement those features. Please keep PR titles easy to read and descriptive of changes, this will make them easier to merge. Complete apps with multiple features. Examples of integration with Firebase (analytics, crashlytics). Flutter V2. has officially introduced web support on its stable branch. Today, I'm excited to present a Flutter-based Admin panel, often referred to as a dashboard UI. This Flutter dashboard template, which you can find on GitHub, is a comprehensive solution for your app's backend needs. It comes with a wide array of features including charts, tables, and neatly designed info cards. -
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FlutterUnit
All Platform Flutter Experience App
FlutterUnit is a Flutter-based educational app for measuring various physical units and conversions. It includes calculators for multiple unit categories (length, mass, volume, etc.), conversion tools, and UI components demonstrating modular architecture and state management patterns. Ideal for learning Flutter UI & business logic structure. -
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LangChain.dart
Build LLM-powered Dart/Flutter applications
LangChain.dart is a Dart and Flutter implementation of the LangChain framework, designed to enable developers to build LLM-powered applications for mobile, web, and cross-platform environments. It provides a structured way to integrate language models into applications by offering abstractions for chains, agents, embeddings, and vector stores. The framework supports multiple providers and includes packages for integrating with services such as OpenAI, Google AI, and Firebase, allowing developers to build both local and cloud-based AI workflows. It is designed with developer experience in mind, offering strongly typed APIs, modular packages, and seamless integration into Flutter applications. The project also supports real-time communication features such as WebSocket-based APIs and streaming outputs, which are important for interactive applications. -
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RxDart
The Reactive Extensions for Dart
RxDart is a reactive programming toolkit that augments Dart’s native Streams with a rich set of Rx-style operators and subjects. It offers composition primitives like map, where, debounce, throttle, merge, combineLatest, and switchMap, enabling expressive pipelines for events and async data. Subjects provide multicast behaviors so multiple listeners can share a single data source while maintaining semantics like replaying the latest value. By emphasizing immutability and one-way data flow, RxDart helps isolate side effects and makes complex state transitions easier to reason about. It’s widely used to coordinate UI events, network requests, and caching layers, especially when timing and concurrency are non-trivial. The library aims to stay idiomatic with Dart Streams while giving developers the ergonomic power long associated with the ReactiveX family. In practice, it encourages clear separation between data producers, transformers, and consumers. -
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Flutter Plugins
Plugins for Flutter maintained by the Flutter team
This repository (now archived) houses the first-party plugin implementations maintained by the Flutter team, enabling access to platform-specific APIs (e.g. camera, file access, web views, etc.) from Dart/Flutter code. It essentially provides the bridge between Flutter apps and native mobile capabilities: for each plugin, there is often a Dart interface and underlying platform code (Android, iOS, etc.). Over time, the content of this repo has been moved to a newer monorepo or reorganized under flutter/packages. The plugins here are intended to follow Flutter’s design conventions and support integration with the wider Flutter ecosystem (published on pub.dev). Because the repository is archived, it is now read-only; future development of plugin code occurs elsewhere in the official Flutter organization. -
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Fish Redux
An assembled flutter application framework
Fish Redux is a high-level, componentized application framework for Flutter based on the Redux paradigm. It emphasizes modular “assembly” of application features — you build small “components” with state, actions, views, and connectors, and then assemble them into larger screens or flows. It supports functional programming style, predictable state containers, pluggable component systems, and non-destructive performance (i.e. minimizing unnecessary rebuilds). Fish Redux was developed within Alibaba (for the Xianyu app) to address maintainability and coupling challenges in large, complex Flutter apps. Its architecture makes it well suited for medium to large scale applications where clear separation, reusability, and testability are important. -
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Flukit
Flutter UI Kit
flukit is a Flutter UI toolkit (a component/widget library) that provides a suite of useful UI widgets and features (e.g. scale views, pull-to-refresh, watermark, swipers, custom progress indicators) to speed development of Flutter apps. Swiper component (carousel/swipe view). GradientCircularProgressIndicator widget for custom progress visuals. Collection of other utility UI widgets to complement Flutter core widgets. -
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Flutter Architecture Samples
TodoMVC for Flutter
Flutter Architecture Samples is a curated repository that implements the same app (typically a “todo” app) using various architectural / state management patterns (e.g. BLoC, Redux, Provider, MVC, etc.). Its goal is educational: to help developers compare architecture styles, understand trade-offs, and see best practices in action. You can use the samples in this project as a learning reference, as a roughly apples-to-apples comparison of different approaches, or as a starting point for creating your own apps. The focus of this project is on demonstrating how to structure your code, design your architecture, and the eventual impact of adopting these patterns on testing and maintaining your app. You can use the techniques demonstrated here in many different ways to build apps. Your own particular priorities will impact how you implement the concepts in these projects, so you should not consider these samples to be canonical examples.
