Top 12 Social media sites and messaging app ranked by user counts

1. Facebook has reached 2 billion users

2. Google's YouTube’s 1.5 billion
3. Facebook's WhatsApp 1.2 billion
4. Facebook Messenger 1.2 billion
5. WeChat had 938 million users in May 2017 (23% growth YoY)
6. QQ 861 million in Q1 2017, a decrease of 2% YoY
7. Instagram 700 million
8. Weibo 340 million
9. Twitter’s 328 million
10. Skype is at about 300 million
11. Snapchat 255 million
12. Line 217 million at Jan 2017