Free and Open Source, Distributed, RESTful Search Engine

Zipkin is a distributed tracing system

Apache Druid: a high performance real-time analytics database.

Stetho is a debug bridge for Android applications, enabling the powerful Chrome Developer Tools and much more.

The Most Powerful Swipe Layout!

📈 Capturing JVM- and application-level metrics. So you know what's going on.

Catch common Java mistakes as compile-time errors

[DEPRECATED] Action bar implementation which uses the native action bar on Android 4.0+ and a custom implementation on pre-4.0 through a single API and theme.

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

Android Asynchronous Networking and Image Loading

A Material design back port of Android's CalendarView

[Archived] Highlight the best bits of your app to users quickly, simply, and cool...ly

OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID…

A lightweight wrapper around SQLiteOpenHelper which introduces reactive stream semantics to SQL operations.

Repository that showcases 3 Android app architectures: "Standard Android", MVP and MVVM. The exact same app is built 3 times following the different patterns.

A Gradle plugin to report the number of method references in your APK on every build.

Android: iOS-like over-scrolling effect applicable over almost all scrollable Android views.

⚡ [Android Library] Play with sensor events & detect gestures in a breeze.

Custom shaped android imageview components

A library that analyzes an Android device's specifications and calculates which year the device would be considered "high end”.

Android performance test tool-CPU,memory,network traffic,starting time,battery current and status

Paper is a fast NoSQL-like storage for Java/Kotlin objects on Android with automatic schema migration support.

A High Dynamic Range (HDR) Histogram

a SharedPreferences replacement for Android with multiprocess support

Stream summarizer and cardinality estimator.

An Android helper class to manage database creation and version management using an application's raw asset files

Android fillable progress view working with SVG paths. This is a nice option too if you want to create an interesting branding logo for your app. Based on the iOS project: https://github.com/poolqf…

A view abstraction to provide a map user interface with various underlying map providers

Real Time communication library using Animated Gifs as a transport™