- Android Support v4 (Development Framework)   The Android Support Library is not actually a single library, but rather a collection of libraries that can roughly be divided into two groups: compatibility and component libraries. For details, please see  Understanding the Android Support Library. 
- AndroidX Activity (Utility)   provides the base Activity subclass and the relevant hooks to build a composable structure on top. 
- Android Jetpack Annotations (Utility)   library that contains the annotations for Android Jetpack. 
- AppCompat (Utility)   support newer Android features on older Android versions. 
- Biometric (Utility)   authenticate with biometrics or device credentials, and perform cryptographic operations. 
- Androidx Core (Utility)   a static library that you can add to your Android application in order to use APIs that are either not available for older platform versions or utility APIs that aren't a part of the framework APIs. 
- AndroidX Fragment (UI Component)   AndroidX library to encapsulate part of the user interface or behavior into reusable components. 
- Lifecycle (Utility)   perform actions in response to a change in the lifecycle status of another component, such as activities and fragments. 
- Loader (Utility)   library to load data for your UI that survives configuration changes. 
- Android Activity Saved State (Utility)   provides the base Activity subclass and the relevant hooks to build a composable structure on top. 
- Vectordrawable (UI Component)   AndroidX library to render vector graphics. 
- Android Jetpack VersionedParcelable (Utility)   Provides a stable but relatively compact binary serialization format that can be passed across processes or persisted safely. 
- Jetpack WindowManager Library (Utility)   enables application developers to support new device form factors and multi-window environments. The library provides a common API surface for API versions 14 and later. Especially provides additional functionality on foldable devices. 
- Tink (Utility)   a multi-language, cross-platform library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse. 
- Flutter (Development Framework)   a cross-platform development kit created by Google, based on the Dart programming language. 
- local_auth (Utility)   Flutter plugin to provide means to perform local, on-device authentication of the user. 
- url_launcher (Utility)   a Flutter plugin for launching a URL. 
- Kotlin (Utility)   The Kotlin Programming Language 
- kotlinx.coroutines (Utility)   library support for Kotlin coroutines.