* NetCipher
<https://github.com/guardianproject/NetCipher>

* ButterKnife
<https://jakewharton.github.io/butterknife>

* ShiftColorPicker
<https://github.com/DASAR/ShiftColorPicker>

* Android Support Library
<https://developer.android.com/topic/libraries/support-library/index.html>

* Android Design Library
<https://android-developers.blogspot.de/2015/05/android-design-support-library.html>
