An open source project to provide push notification support for Android - a XMPP based notification server and a client tool kit.

android-checkout is a library for Android In-App Billing (v3). The main goal is to reduce work which should be done by developers who want to integrate in-app purchases in their products. The project is inspired by Volley library and is designed to be easy to use, fast and flexible.

Mobile App testing on 300+ real devices!

• Save in App Development Costs
• Reduce Risks with Proactive, Agile Testing
• Speed Up Time to Market
• Reduce Operational & Unpredictable Costs
• Improve App Ratings & Brand Reputation

AndroidAsync is a low level network protocol library.

Features:

• Based on NIO. One thread, driven by callbacks. Highly efficient.
• All operations return a Future that can be cancelled
• Socket client + socket server
• HTTP client + server
• WebSocket client + server
• Socket.IO client

This library is an Android networking abstraction library consisting of a combination of Volley, OkHttp, and Jackson, with a little glue to stick it all together. It's a great place to start if you need to execute requests, especially thos which return JSON.

RoboCoP is a Java library that can generate a fully-functional ContentProvider from a simple JSON schema file.