RxCommand package, Stream based implementation.

Binder

A state management package that uses InheritedWidget
at its core. Inspired in part by recoil.
This package promotes the separation of concerns.

Binder package

Binder examples

Binder snippets, vscode snippets to be even more
productive with Binder

GetX

A simplified reactive state management solution.

GetX package

Complete GetX State Management, a video by Tadas Petra

GetX Flutter Firebase Auth Example, by Jeff McMorris

states_rebuilder

An approach that combines state management with a
dependency injection solution and an integrated router.
For more information, see the following info:

States Rebuilder project code

States Rebuilder documentation

Triple Pattern (Segmented State Pattern)

Segmented State pattern.