Instagram

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

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

React Native SDK enables building both iOS and Android apps from a single codebase. It is optimized for fast development and consistent user experiences using the React framework.

Jackson has been known as "the Java JSON library" or "the best JSON parser for Java". Or simply as "JSON for Java".

An Android library for managing images and the memory they use.

A JavaScript engine optimized for running React Native.

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

An easy, flexible way to add a shimmering effect to any view in an Android app.

Native code loader for Android

Fast, easy, and fraud-proof virtual inspections

A portable layout engine targeting web standards

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!

XZ Utils are a complete C99 implementation of the .xz file format. XZ Utils were originally written for POSIX systems but have been ported to a few non-POSIX systems as well.

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.

Learn how people interact with your apps across multiple devices

Allow your application to interact with the Spotify app running in the background as a service.

Redux implementation for Kotlin (supports multiplatform JVM, native, JS, WASM)

Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

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

A desktop debugging platform for mobile developers.

Views and Drawable for displaying animated GIFs on Android

Helper library and format description for SafeParcel, a version-agnostic parcelable serializer

An image loading and caching library for Android focused on smooth scrolling

Tensors and Dynamic neural networks in Python with strong GPU acceleration

Psiphon is an Internet censorship circumvention system.

A declarative UI framework for Android