Phonograph by Karim Abou Zeid
AOSP Support Libraries by AOSP contributors
Glide by Sam Judd
Retrofit by Square team
OkHttp by Square team
Koin by Arnaud Giuliani
Material Dialogs and Cab by Aidan Michael Follestad
Material Contextual Action Bar by Aidan Michael Follestad
Android In-App Billing v3 Library by Henning Dodenhof
Advanced RecyclerView by Haruki Hasegawa
Custom Activity on Crash by Eduard Ereza MartÃnez
NanoHttpd by NanoHttpd Team
Circular Seekbar by Tankery
jAudioTagger by Kanedias
Android Fast Scroll by Zhang Hai
Image Picker by Dhaval Patel
Material Intro by Jan Heinrich Reimer
Slidr by Drew Heavner
FadingEdgeLayout by bosphere
KeyboardVisibilityEvent by Yasuhiro SHIMIZU
android-snowfall by Jetradar Mobile
Insetter by Chris Banes
Icons by Austin Andrews