글라이드
https://raw.githubusercontent.com/bumptech/glide/master/LICENSE
엑소플레이어
https://raw.githubusercontent.com/google/ExoPlayer/release-v2/LICENSE
FirebaseUI-안드로이드
https://raw.githubusercontent.com/firebase/FirebaseUI-Android/master/LICENSE
스포트라이트
https://raw.githubusercontent.com/TakuSemba/Spotlight/master/LICENSE
수익캣 구매-안드로이드
https://raw.githubusercontent.com/RevenueCat/purchases-android/master/LICENSE
가독성4J
https://raw.githubusercontent.com/dankito/Readability4J/master/LICENSE
페이스북 안드로이드 SDK
https://github.com/facebook/facebook-android-sdk/blob/master/LICENSE.txt–
OkHttp
https://github.com/square/okhttp/blob/master/LICENSE.txt
세그먼트 안드로이드 분석
https://github.com/segmentio/analytics-android/blob/master/LICENSE.md
폴리오리더
https://github.com/FolioReader/FolioReader-Android/blob/master/License.md