Google Mobile Services in terms of the Android library refers to Google Play Services, a proprietary background service and API package for Android devices which is not part of the Android Open Source Project (AOSP). The library does not contain those services (i.e. it usually requires the Google Framework, often referred to as „GApps“, being installed on the device), but allows an app to communicate with them. Be aware this usually goes along with transferring at least parts of your personal data to the Google network.

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.

provides the base Activity subclass and the relevant hooks to build a composable structure on top.

library that contains the annotations for Android Jetpack.

support newer Android features on older Android versions.

AndroidX library to implement the Material Design card pattern with round corners and drop shadows.

a framework to define UIs programmatically with composable functions that describe its shape and data dependencies.

library to reduce the number of nested views needed.

AndroidX library to position top-level application widgets, such as AppBarLayout and FloatingActionButton.

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.

stores data asynchronously, consistently, and transactionally, overcoming some of the drawbacks of SharedPreferences.

AndroidX library to implement a Material Design drawer widget.

core library to enable emoji compatibility in Kitkat and newer devices to avoid the empty emoji characters.

AndroidX library to encapsulate part of the user interface or behavior into reusable components.

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.

perform actions in response to a change in the lifecycle status of another component, such as activities and fragments.

share media contents and controls with other apps.

a library to build interactive settings screens without needing to interact with device storage or manage the UI.

AndroidX library that enables libraries to prepopulate ahead of time compilation traces to be read by ART.

a persistence library that provides an abstraction layer over SQLite to allow for more robust database access while harnessing the full power of SQLite.

display large sets of data in your UI while minimizing memory usage.

provides the base Activity subclass and the relevant hooks to build a composable structure on top.

AndroidX library to implement a sliding pane UI pattern.

AndroidX library to implement a straightforward, performant way to initialize components at app startup.

implemtation of the swipe-to-refresh UI pattern.

Provides a stable but relatively compact binary serialization format that can be passed across processes or persisted safely.

AndroidX library to display Views or Fragments in a swipeable format.

replaces AndroidX ViewPager, addressing most of its predecessor’s pain-points, including right-to-left layout support, vertical orientation, modifiable Fragment collections, etc.

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.

an API that makes it easy to schedule deferrable, asynchronous tasks that must be run reliably .

generates typesafe Kotlin APIs from SQL.

Firebase Data Transport is part of Google’s Firebase SDK.

library to help with material design guidelines.

a set of core libraries that includes new collection types (such as multimap and multiset), immutable collections, a graph library, functional types, an in-memory cache, and APIs/utilities for concurrency, I/O, hashing, primitives, reflection, string processing, and much more.

 

Firebase Installations is a service that allows you to manage the installation of your app on a user's device. The Firebase installations service (FIS) provides a Firebase installation ID (FID) for each installed instance of a Firebase app. Used e.g. for FCM, but also for Analytics.

used by Crashlytics and Performance internally to measure sessions.

library that provides a simple and customizable NumberPicker.

library to parse JSON into Java objects.

OkHttp is an HTTP+HTTP/2 client for Android and Java applications.

RxJava (Reactive Extensions for the JVM) is a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

The Kotlin Programming Language

library support for Kotlin coroutines.

an implementation of DNS in Java. It supports all defined record types (including the DNSSEC types), and unknown types. It can be used for queries, zone transfers, and dynamic updates.

Type-safe HTTP client for Android and Java by Square, Inc.

Type-safe HTTP client for Android and Java by Square, Inc.