This document provides information on various tools and libraries for mobile software development on Android, including: - Android Studio as the official IDE for Android development. - Realm for using databases in Android apps. - Butterknife for binding views in Android. - Retrofit for making REST API calls. - Picasso for image downloading and caching. - Otto as an event bus for Android. - Timber for logging. - Dagger 2 for dependency injection. - RxJava for reactive programming. - Espresso, JUnit, and Roboelectric for Android testing. - MVP as an architectural pattern for Android apps.