Open Source Dart Projects
Dart is an open-source, object-oriented programming language designed for building applications across different platforms. Its concise syntax, sound type system, and asynchronous programming features help developers create responsive user interfaces, handle network and file operations, and share code across mobile, web, and desktop environments. Dart is also used for command-line tools, backend services, and games, making it useful beyond app development alone.
Open source tools in the Dart ecosystem include application frameworks, game engines, libraries, developer utilities, and complete apps. When choosing one, consider its license, documentation, compatibility with your target platforms, dependencies, release history, and maintenance activity. Dart is useful for developers learning application development, teams seeking reusable code, and contributors who want to build or adapt cross-platform software.
6 repositories · updated October 3, 2026

flame: Build Games with Flutter
Flame is a Dart game engine that adds a game loop, component system, rendering helpers, input handling, and collision detection to Flutter. It suits developers building 2D games who want game-focused tools alongside Flutter.

ProxyPin: Open Source HTTP(S) Traffic Capture Tool for All Platforms
ProxyPin is an open-source and free software designed to capture, inspect, and rewrite HTTP(S) traffic across all major platforms, including Windows, Mac, Android, iOS, and Linux. Developed with Flutter, it boasts a beautiful and user-friendly interface, making network debugging accessible and efficient for developers and testers alike.

Flutter: Google's SDK for Cross-Platform App Development
Flutter is Google's open-source UI software development kit for building beautiful, fast, and natively compiled applications for mobile, web, and desktop from a single codebase. It empowers developers to create expressive UIs with its layered architecture and offers productive features like stateful hot reload. This framework is widely adopted and supported by a vibrant community.

AppFlowy: Organize Projects, Notes, and Team Knowledge
AppFlowy is a cross-platform collaborative workspace for notes, wikis, projects, and tasks, with AI features and options for controlling where data is hosted. It suits individuals and teams looking for a customizable alternative to hosted productivity suites.

Stac: Server-Driven UI Framework for Flutter Apps
Stac is a powerful Server-Driven UI (SDUI) framework designed for Flutter, enabling developers to build dynamic, cross-platform applications. It allows for real-time UI updates and flexible application development using JSON, simplifying the creation and modification of user interfaces.

localsend: Share Files Between Nearby Devices
LocalSend transfers files and messages between nearby devices on the same local network, without internet access or third-party servers. It suits people who need a cross-platform alternative to cloud-based sharing or platform-specific transfer tools.