Open Source Android Apps

1. https://github.com/pcqpcq/open-source-android-apps
2. http://stackoverflow.com/questions/1840231/open-source-examples-of-well-designed-android-applications
3. https://android.googlesource.com/?format=HTML
4. http://blog.yargies.com/post/39321551640/14-great-android-apps-that-are-also-open-source/
5. https://github.com/c99koder/lastfm-android
6. https://code.google.com/archive/p/apps-for-android/
7. https://www.quora.com/Which-are-the-best-Android-projects-to-follow-on-GitHub

This is list contain some of the top links on google.

Thanks,
Vivek