The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.

meaningful crash reports in real-time that help you fix and improve your apps.

The Google Analytics SDK for Android makes it easy for native Android developers to collect user engagement data from their applications. Developers can then use the Google Analytics reports to measure: The number of active users are using their applications. From where in the world the application is being used. Adoption and usage of specific features. Crashes and exceptions. In-app purchases and transactions. And many other useful metrics... The Google Analytics SDK also gives you the tools to monitor the success of mobile marketing campaigns. Connect user interactions with paid ads, Google Play downloads, and subsequent in-app usage and Ecommerce transactions. Google Analytics provides a powerful platform to measure and optimize all of your application marketing efforts.

Deprecated Google Cloud Messaging for Android (GCM) is a service that allows you to send data from your server to your users' Android-powered device, and also to receive messages from devices on the same connection. The GCM service handles all aspects of queueing of messages and delivery to the target Android application running on the target device. GCM is completely free no matter how big your messaging needs are, and there are no quotas.

A Google Data API is an API based upon the Google Data protocol. The Google Data protocol is based on the Atom 1.0 and RSS 2.0 syndication formats, plus the Atom Publishing Protocol (APP). The Google Data protocol extends those standards in various ways, using the extension mechanisms built into the standards.

Brings file & remote logging support to the Android platform. The microlog4android project brings the microlog logging library to Android. This gives the developer a powerful set of logging tools, such as logging to a server.

What is Signpost? Signpost is the easy and intuitive solution for signing HTTP messages on the Java platform in conformance with the OAuth Core 1.0a standard. Signpost follows a modular and flexible design, allowing you to combine it with different HTTP messaging layers. Click here for a list of supported HTTP libraries. Signpost is a community effort and may be downloaded, modified, and redistributed under the terms of the Apache License version 2.

The PayPal Android SDK provides a native Android library that provides simple payment processing for common business needs. It simplifies accepting credit card and PayPal payments in your mobile app. The library presents a simple UI, features card.io credit card scanning, and uses a proof of payment system so you don’t need to worry about PCI compliance.

The Simple Logging Facade for Java (SLF4J) serves as a simple facade or abstraction for various logging frameworks (e.g. java.util.logging, logback, log4j) allowing the end user to plug in the desired logging framework at deployment time.