Volley is an HTTP library that makes networking for Android apps easier and most importantly, faster. Volley is available on GitHub. Volley offers benefits such as automatic scheduling of network requests, multiple concurrent network connections.
The Apache HttpComponents™ project is responsible for creating and maintaining a toolset of low level Java components focused on HTTP and associated protocols. The Apache HttpComponents™ project functions under the Apache Software Foundation (http://www.apache.org), and is part of a larger community of developers and users.
Pubnub allows developers to quickly implement secure, collaborative features in a variety of realtime apps that have gained massive traction. It helps apps reflect any source of live data, from mapping, geotracking and dispatch, to broadcasting push notifications. Pubnub is available for iOSand Android apps.