pubdev

Pub.dev is the official package repository for the Dart programming language and the Flutter framework. It serves as the central index for open-source Dart packages, providing metadata, version history, and download links. Maintained by the Dart team, pub.dev is used in conjunction with the Dart Pub tooling to publish, discover, and install packages within Dart and Flutter projects.

Packages on pub.dev are defined by a pubspec.yaml manifest that lists the package name, version, description, homepage, authors, licenses, and dependencies. Dart uses semantic versioning, and dependencies specify version constraints that Pub will resolve transitively when a project is built or updated. Each package page on pub.dev displays its versions, documentation, README, and license information, helping developers assess suitability and compatibility.

Publishing a package is done with the Dart Pub tool, for example via dart pub publish (or flutter pub publish for Flutter packages). Publishers authenticate with pub.dev, and the platform validates package metadata, license compliance, and other requirements before the package and its new versions become available for installation by others. Once published, developers can install or upgrade the package using the standard pub get or flutter pub get workflows.

Pub.dev also provides discovery and quality signals to help developers evaluate packages. Each package has a page with a version history, usage examples, and a scorecard that reflects aspects such as documentation, maintenance, and overall health. The repository supports tagging, categorization, and search to facilitate finding packages that meet specific needs. Pub.dev thus functions as the primary hub for sharing and reusing Dart and Flutter code.