Spotify

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

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

A functional reactive framework for managing state evolution and side-effects.

Comscore is a trusted currency for planning, transacting, and evaluating media across platforms.

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

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.

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.

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 robust native library loader for Android.

Learn how people interact with your apps across multiple devices

Automatic tagging of RxJava 2+ originating subscribe points for onError() investigation.

A modern JSON library for Kotlin and Java.

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 type-safe HTTP client for Android and Java

Image loading for Android and Compose Multiplatform.

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.

App Links is an open omni-channel solution for deep linking to content in your mobile app.