Kotlin Multiplatform lifecycle-aware business logic components (aka BLoCs) with routing (navigation) and pluggable UI (Jetpack Compose, SwiftUI, JS React, etc.)

Kotlin Multiplatform State Library

A Kotlin-first SDK for Firebase

A Model-View-Presenter / Model-View-Intent library for modern Android apps

Event bus for Android and Java that simplifies communication between Activities, Fragments, Threads, Services, etc. Less code, better quality.