Floating Action Button Packages
simple_speed_dial

A simple Flutter speed dial. You may add as many speed dial alternatives as you wish. Labels may be added beside the options. Every FAB’s color can be customized.
draggable_fab
The FAB wrapper widget may be dragged to any edge of the screen and is draggable.
curved_nav_bar
The left and right side of the lower bar offer a variety of features. You can utilize FAB as a middle tab, or do other things like open popups or cameras.
flutter_boom_menu
The plugin for Flutter is ideal for creating a Boom Menu with icons, title, sub title, dynamic FAB Icon, and hiding on scrolling.
fab_circular_menu
A Flutter package that creates a beautiful circular menu with a Floating Action Button.
animated_floating_buttons
You can make a foldable list of float buttons by using this package.