This is an updated list of the top Android Apps that have amassed more than 50,000,000 downloads on the official Google Play store. The data has been screen-scraped from Google Web Search and the Google Play store. You can also download the raw data as an Excel sheet.

App Install Base: 500 million to 1 billion

1. Gmail
2. YouTube
3. Google Play services
4. Maps
5. Facebook

App Install Base: 100 million - 500 million

1. GO Launcher EX
2. Twitter
3. Viber
4. Facebook Messenger
5. Voice Search
6. Google Play Books
7. Subway Surfers
8. Google Play Music
9. Tiny Flashlight + LED
10. Pandora
11. WhatsApp Messenger
12. Skype
13. Fruit Ninja Free
14. Dropbox
15. Adobe Reader
16. Angry Birds
17. Talking Tom Cat 2 Free
18. Street View on Google Maps
19. Google+
20. Hangouts (replaces Talk)
21. Google Search
22. Chrome Browser
23. Google Play Movies & TV
24. LINE: Free Calls & Messages

App Install Base: 50 million - 100 million

1. GO SMS Pro
2. KakaoTalk: Free Calls & Text
3. Google Translate
4. Temple Run
5. SoundHound
6. Tango Video, Voice & Text
7. Yahoo! Mail
8. Brightest Flashlight Free ®
9. Advanced Task Killer
10. GO Locker
11. Pou
12. Angry Birds Rio
13. Hill Climb Racing
14. Barcode Scanner
15. WeChat
16. TuneIn Radio
17. MX Player
18. PicsArt
19. Shoot Bubble Deluxe
20. Despicable Me
21. Talking Tom Cat Free
22. GROUP PLAY
23. Shazam
24. ChatON
25. Kindle
26. ZEDGE.
27. Jetpack Joyride
28. Google Play Magazines
29. AntiVirus Security
30. Pool Billiards Pro
31. Opera Mini web browser
32. Google Earth
33. Flipboard: Your News Magazine
34. Angry Birds Space
35. Angry Birds Seasons
36. Angry Birds Star Wars 

Special thanks to Mr. Amit Aggarwal.