Hi all, I'm a Java and Android developer from Germany, Münster area. Matze pointed me to the aerogear-android framework and unified push, so I was curious and wanted to give it a try. Until it worked I had some little issues, which I want to share, maybe it helps to improve documentation, and I was not sure if I should just start a pull request about it... I started with forking and cloning aerogear-android, aerogear-unified-push-server and PushEEDemo to my local development environment. For aerogear-android I followed the instructions on github and on http://aerogear.org/docs/guides/GetStartedAndroidIntellij/. Worked nice, I even didn't have to uncomment the extra modules for the maven-android-sdk-deployer, after updating all libs in the Android SDK Manager it just worked. The problem with "Could not find tool 'aapt'" was solved by updating the android-maven-plugin to version 3.6, so also no need to create a link to it. But then it was missing the platform version, so my pom looks like this now: <plugin> <groupId>com.jayway.maven.plugins.android.generation2</groupId> <artifactId>android-maven-plugin</artifactId> <version>3.6.0</version> <configuration> <sdk> <platform>17</platform> </sdk> <undeployBeforeDeploy>true</undeployBeforeDeploy> </configuration> <extensions>true</extensions> </plugin> I also had to increase the version number of the support lib: <dependency> <groupId>android.support</groupId> <artifactId>compatibility-v4</artifactId> <version>13</version> </dependency> Finally I had to add 2 lines in proguard.cfg in order to let maven build successfully: -dontwarn android.support.** -dontwarn com.google.android.gms.** The aerogear-unified-push-server did run out of the box. But when I followed the instructions on http://aerogear.org/docs/specs/aerogear-server-push/, I always got something like "Authorization failed" when trying to register a push application. I found on the github page that I have to login and use cookies with the curl requests, with that it worked. But then I got auth errors when the PushEEDemo app tried to register on the unified push server. Finally I got the hint from Matze to use the "quickstart-base" branch of the server, which skips authorization. With that I successfully sent a notification to my Nexus 4 :) Maybe it would useful to point to that branch in the docs. Last but not least I wanted to test it on an older device with Android 2.3.7., for that I had to change the manifest of the PushEEDemo app. I already started a pull request about it (since it does not seem to be an official aerogear repo ;) ): https://github.com/secondsun/PushEEDemo/pull/1. With that changes it worked, too. When I have some time, I will have a look into the other features of Aerogear too, interesting project :) Thx for reading this far & greetings, Marc @slintes