Top 20 NuGet bottom-bar Packages

Xamarin.Android Binding for Simform Solutions' SSCustomBottomNavigation, an animated TabBar with native control
Yet another material bottom bar library for Android
Xamarin.Android Binding for Felix Soares' AnimatedBottomBar, a library that allows you to show bottom navigation quickly, simply and animated.
Xamarin.Android Binding for Dimezis' BottomNavigationBar, a Simple Bottom Navigation Bar for Android
Xamarin.Android Binding for KaDahlin's AnimatedNavBar, an animated version of a bottom navigational bar that follows material design guidelines. Icons / colors are customizable to fit your app's specific theme. AnimatedVectorDrawable's are supported for animating the selected icon.
Xamarin.Android Binding for Alexander Dadukin's ExpandableBottomBar. A new way to implement navigation in your Android App
Xamarin.Android Binding for Roughike's BottomBar. Android view component that mimics the new Material Design Bottom Navigation pattern
Beautiful BottomBar for Android