Flutter Favorites
Some of the packages that demonstrate the highest levels of quality, selected by the Flutter Ecosystem Committee
Flutter plugin for Firebase Cloud Messaging, a cross-platform messaging solution that lets you reliably deliver messages on Android and iOS.
Toggle Switch - A simple toggle switch widget. It can be fully customized with desired icons, width, colors, text, corner radius etc. It also maintains selection state.
Geolocation plugin for Flutter. This plugin provides a cross-platform (iOS, Android) API for generic location (GPS etc.) functions.
Flutter/Dart <-> Rust binding generator, feature-rich, but seamless and simple

Most popular packages
Some of the most downloaded packages over the past 30 days
Versions and version constraints implementing pub's versioning policy. This is very similar to vanilla semver, with a few corner cases.
Manage a finite pool of resources. Useful for controlling concurrent file system or network requests.
Access common Win32 APIs directly from Dart using FFI — no C required!
Better node.js preamble for dart2js, use it in your build system.
A fakeable wrapper for dart:core clock APIs.
A collection of utilities to transform and manipulate streams.
Top Flutter packages
Some of the top packages that extend Flutter with new features
Flutter plugin for Firebase Cloud Messaging, a cross-platform messaging solution that lets you reliably deliver messages on Android and iOS.
A Flutter plugin for integrating Google Maps in iOS and Android applications.
A highly customizable Flutter chart library that supports Line Chart, Bar Chart, Pie Chart, Scatter Chart, and Radar Chart.
Plugin that allows you to keep the device screen awake, i.e. prevent the screen from sleeping on Android, iOS, macOS, Windows, Linux, and web.
ValueNotifier, but outside Flutter and with some extra perks
Plugin that allows Flutter apps to generate and print documents to compatible printers on Android, iOS, macOS, Windows, and Linux, as well as web print.


Top Dart packages
Some of the top packages for any Dart-based app or program
Access common Win32 APIs directly from Dart using FFI — no C required!
Hive Community Edition - A spiritual continuation of Hive v2
Dart library for validating and sanitizing strings, especially those from user input.
Removes common accents and diacritical signs from a string by replacing them with an equivalent character.
PostgREST client for Dart. This library provides an ORM interface to PostgREST.
A platform-independent package for parsing and serializing HTTP formats.
Package of the Week
Package of the Week is a series of quick, animated videos, each of which covers a particular package