Robinhood

Square’s meticulous HTTP client for the JVM, Android, and GraalVM.

LeakCanary is a memory leak detection library for Android.

A Java serialization/deserialization library to convert Java Objects into JSON and back

Process Phoenix facilitates restarting your application process.

A collection of extension libraries for Jetpack Compose

A modern I/O library for Android, Java, and Kotlin Multiplatform.

Open-source cryptographic APIs

Stripe is a global technology company that builds economic infrastructure for the internet.

Image Cropping Library for Android, optimised for Camera / Gallery.

RxJava types that are both an Observable and a Consumer.

gRPC and protocol buffers for Android, Kotlin, Swift and Java.

Firebase Cloud Messaging (FCM) is a cross-platform messaging solution that lets you reliably send messages.

RxJava binding APIs for Android's UI widgets.

Java JWT: JSON Web Token for Java and Android

Lottie is a library for Android, iOS, Web, and Windows that parses Adobe After Effects animations exported as JSON with Bodymovin and renders them natively on mobile and on the web!

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

A Retrofit 2 Converter.Factory for Kotlin serialization.

Framework for quickly creating connected applications in Kotlin with minimal effort

A robust native library loader for Android.

ML Kit brings Google’s machine learning expertise to mobile developers in a powerful and easy-to-use package. Make your iOS and Android apps more engaging, personalized, and helpful with solutions that are optimized to run on device.

A modern JSON library for Kotlin and Java.

Volley is an HTTP library that makes networking for Android apps easier and, most importantly, faster.

The Plaid Link SDK is a quick and secure way to link bank accounts to Plaid in your Android app.

Protocol Buffers are language-neutral, platform-neutral extensible mechanisms for serializing structured data.

A type-safe HTTP client for Android and Java

Image loading for Android and Compose Multiplatform.

RxJava bindings for Android

Secure Identity Verification Solutions

A Swift and Kotlin library for making composable state machines, and UIs driven by those state machines.

Developer-first error tracking and performance monitoring

Dagger is a fully static, compile-time dependency injection framework for Java, Kotlin, and Android. It is an adaptation of an earlier version created by Square and now maintained by Google.

Official Google Maps SDK