The Dart team publishes packages on pub.dev under three verified publishers. The following table shows these verified publishers, what they’re used for, and the quality and support levels for packages under each publisher.

Publisher	Package contents	Quality and completeness	Community engagement (issues, PRs)
dart.dev	Core packages. Foundational packages that complement the core libraries.	High	High. Triaged on a regular basis.
tools.dart.dev	Tooling packages. Used by the Dart team to build various Dart tools. Can be used for building other tools, but the support commitment is lower than for core packages.	Medium	Medium-low. Triaged occasionally; unable to respond to all issues.
labs.dart.dev	Experimental packages. Shared for early feedback. Some will likely be discontinued.	Low/incomplete	Varying. No promises; maintained on a best-effort basis.