https://github.com/jdg/MBProgressHUD
https://github.com/alvises/FPPopover
https://github.com/facebook/facebook-android-sdk
https://github.com/facebook/facebook-ios-sdk
https://www.webmproject.org/code/
https://www.opus-codec.org/
https://www.speex.org/
https://android.googlesource.com/platform/frameworks/volley/
http://www.activeandroid.com/
https://github.com/wunderlist/android-sliding-layer-lib
https://github.com/gabrielemariotti/cardslib
https://github.com/JakeWharton/butterknife
https://github.com/keyboardsurfer/Crouton
http://nineoldandroids.com/
https://github.com/square/leakcanary
https://github.com/greenrobot/EventBus
https://github.com/umano/AndroidSlidingUpPanel
https://github.com/bumptech/glide
https://github.com/cookpad/issue-reporter-android
https://projectlombok.org/
http://square.github.io/dagger/
http://hamcrest.org/JavaHamcrest/
https://github.com/mockito/mockito
https://github.com/google/ExoPlayer
https://github.com/square/okhttp
https://github.com/twitter/twitter-kit-android
http://boltsframework.github.io/Bolts-Android/
http://twitter.github.io/twemoji/
https://github.com/ajaxzip3/ajaxzip3.github.io