Replacing Google with microG
 

A common criticism of free-software projects built for Android is that they all too often rely not just on the frameworks and libraries that are part of the official Android Open Source Project (AOSP), but on the proprietary APIs implemented in various add-ons from Google - such as the Google Maps API or the Google Cloud Messaging message-broker service. Working around these Google-supplied components is not trivial, but there is at least one effort underway to provide a drop-in free-software replacement: microG. We talked about microG over two years ago.

http://osnews.com/story/29291/Replac...le_with_microG