- Logback (Utility)
requires 1 permissions: android.permission.INTERNET 
a logging helper intended as a successor to the popular log4j project, picking up where log4j leaves off.
- 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.
- Arch (Utility)
helper for other arch dependencies, including JUnit test rules that can be used with LiveData.
- AppCompat (Utility)
support newer Android features on older Android versions.
- CameraX (Utility)
an addition to Android Jetpack that makes it easier to add camera capabilities.
- Cardview (UI Component)
AndroidX library to implement the Material Design card pattern with round corners and drop shadows.
- Android Support Library collections (Utility)
standalone efficient collections.
- Concurrent (Utility)
AndroidX library to help move tasks off the main thread with coroutines and take advantage of ListenableFuture.
- Constraint Layout Library (Utility)
library to reduce the number of nested views needed.
- Coordinatorlayout (UI Component)
AndroidX library to position top-level application widgets, such as AppBarLayout and FloatingActionButton.
- 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 Cursor Adapter (Utility)
static library support version of the framework's CursorAdapter.
- Android Support Library Custom View (UI Component)
a module to implement custom views. Part of the Android Support Library.
- Documentfile (UI Component)
a library to view a file document.
- Drawerlayout (UI Component)
AndroidX library to implement a Material Design drawer widget.
- Dynamicanimation (UI Component)
create smooth animations with a physics-based animation API.
- Android Emoji2 Compat (UI Component)
core library to enable emoji compatibility in Kitkat and newer devices to avoid the empty emoji characters.
- Exifinterface (Utility)
a library to read and write image file EXIF tags.
- AndroidX Fragment (UI Component)
AndroidX library to encapsulate part of the user interface or behavior into reusable components.
- AndroidX GridLayout (UI Component)
AndroidX library to implement a grid layout.
- Interpolator (UI Component)
AndroidX library to use animation interpolators on older platforms.
- 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.
- AndroidX Local Broadcast Manager (Utility)
an application-wide event bus and embraces layer violations in your app: any component may listen events from any other.
- AndroidX Media (Utility)
share media contents and controls with other apps.
- Palette (Utility)
AndroidX library to extract representative color palettes from images.
- Preference (Utility)
a library to build interactive settings screens without needing to interact with device storage or manage the UI.
- ProfileInstaller (Utility)
AndroidX library that enables libraries to prepopulate ahead of time compilation traces to be read by ART.
- Room (Utility)
a persistence library that provides an abstraction layer over SQLite to allow for more robust database access while harnessing the full power of SQLite.
- Recyclerview (Utility)
display large sets of data in your UI while minimizing memory usage.
- Android Activity Saved State (Utility)
provides the base Activity subclass and the relevant hooks to build a composable structure on top.
- Sqlite (Utility)
library that contains abstract interfaces along with basic implementations which can be used to build your own libraries that access SQLite.
- Startup (Utility)
AndroidX library to implement a straightforward, performant way to initialize components at app startup.
- Swiperefreshlayout (UI Component)
implemtation of the swipe-to-refresh UI pattern.
- Tracing (Utility)
AndroidX library to write trace events to the system trace buffer.
- Transition (UI Component)
animates motion in the UI with starting and ending layouts.
- 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.
- Viewpager (UI Component)
AndroidX library to display Views or Fragments in a swipeable format.
- AndroidX Widget ViewPager2 (UI Component)
replaces AndroidX ViewPager, addressing most of its predecessor’s pain-points, including right-to-left layout support, vertical orientation, modifiable Fragment collections, etc.
- WorkManager (Utility)
an API that makes it easy to schedule deferrable, asynchronous tasks that must be run reliably .
- CBOR For Java (Utility)
Java implementation of RFC 7049: Concise Binary Object Representation.
- Android Internal APIs (Utility)
- D8 dexer and R8 shrinker (Utility)
D8 is a replacement for the DX dexer and R8 is a replacement for the Proguard shrinking and minification tool.
- SearchPreference (Utility)
search inside Android Preferences.
- svg android (Utility)
SVG (Scalable Vector Graphics) library for Android.
- MPAndroidChart (Utility)
Android chart view / graph view library, supporting line- bar- pie- radar- bubble- and candlestick charts as well as scaling, dragging and animations.
- FlexboxLayout (Utility)
- Google Material Design (Utility)
library to help with material design guidelines.
- Google Core Libraries for Java 6+ (Utility)
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.
- Google Gson (Utility)
A Java serialization/deserialization library to convert Java Objects into JSON and back.
- Google Protocol Buffers (Utility)
library that deals with Protocol Buffers (a.k.a., protobuf) – Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data.
- Color Picker (UI Component)
a highly customizable color picker.
- DragSortListView (UI Component)
Android ListView with drag and drop reordering.
- ckChangeLog (UI Component)
library to display a Change Log.
- GreenDao (Utility)
a light & fast
ORM solution for Android that maps objects to SQLite databases.
- Kotlin (Utility)
The Kotlin Programming Language
- kotlinx.coroutines (Utility)
library support for Kotlin coroutines.
- Aho-Corasick (Utility)
Java implementation of the Aho-Corasick algorithm for efficient string matching.
- Apache Commons (Development Framework)
an Apache project focused on all aspects of reusable Java components.
- Bouncy Castle (Utility)
a collection of APIs used in cryptography. Also see
Wikipedia.
- Concentus (Utility)
Pure Portable C# and Java implementations of the Opus audio codec.
- MapsForge (Map)
vector map library written in Java
- MessagePack for Java (Utility)
MessagePack serializer implementation (a fast and compact alternative of JSON).
- Simple Logging Facade for Java (Utility)
abstraction for various logging frameworks (e.g. java.util.logging, logback, log4j) allowing to plug in the desired logging framework at deployment time.
- nQuant.android (Utility)
fast pairwise nearest neighbor based algorithm to be usable on Android.
- durationformatter (Utility)
Java Library for formatting durations.
- Android Emojify (Utility)
convert short codes, emoticons, html entities, emoticons to emoji and vice-versa.
- solarpositioning (Utility)
a Java library for finding topocentric solar coordinates, i.e. the sun’s position on the sky for a given date, latitude, and longitude (and other parameters), as well as times of sunrise and sunset.
- Device Firmware Update (Utility)
requires 3 permissions: android.permission.BLUETOOTH, android.permission.BLUETOOTH_ADMIN, android.permission.BLUETOOTH_CONNECT
update the firmware of nRF51 or nRF52 Series SoCs.
