UI

FloatingActionButton: https://github.com/makovkastar/FloatingActionButton
compile 'com.melnykov:floatingactionbutton:1.3.0'

JSON

gson: https://github.com/google/gson
compile 'com.google.code.gson:gson:2.4'

HTTP

okhttp: http://square.github.io/okhttp/
compile 'com.squareup.okhttp:okhttp:2.5.0'

Verschiedenes

guava: https://github.com/google/guava
compile 'com.google.guava:guava:18.0'