Browse 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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  • 1
    Keyviz

    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.
    Downloads: 10 This Week
    Last Update:
    See Project
  • 2
    Nylo Support

    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.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 3
    Dart Sass

    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.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 4
    FlutterUnit

    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.
    Downloads: 2 This Week
    Last Update:
    See Project
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    Crowdtesting That Delivers | Testeum

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  • 5
    bloc

    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.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 6
    GSY GitHub App Flutter

    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).
    Downloads: 1 This Week
    Last Update:
    See Project
  • 7
    GetWidget

    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.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 8
    Dart

    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.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    dart pdf

    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.
    Downloads: 0 This Week
    Last Update:
    See Project
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  • 10
    rust_core

    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.
    Downloads: 0 This Week
    Last Update:
    See Project
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