| No. | Name | Company | Country [2] | Launched | Monthly active users | Other metrics | |
|---|---|---|---|---|---|---|---|
| 1. | United States | 2004 | 2.8 billion[1] | 1.84 billion daily active users[1] | |||
| 2. | YouTube | United States | 2005 | 2 billion[2] | 3 billion monthly unique visitors[3] | ||
| 3. | United States | 2009 | 2 billion[4] | Had 1 billion DAU when had 1.3 billion MAU[5] | |||
| 4. | Messenger | United States | 2011 | 1.3 billion[6] | |||
| 5. | Tencent | China | 2011 | 1.203 billion[7] | |||
| 6. | United States | 2010 | 1 billion[8] | 500 million daily story users[9] | |||
| 7. | TikTok | TikTok[3] | China[10][11] | 2016 | 800 million[8] | ||
| 8. | Tencent | China | 1999 | 659 million[12] | 267 million daily active users[13] | ||
| 9. | Sina | China | 2009 | 550 million[14] | 241 million daily active users[14] | ||
| 10. | Qzone | Tencent | China | 2005 | 517 million[15] | ||
| 11. | Telegram | Telegram | United Arab Emirates[16] | 2013 | 500 million[17] | ||
| 12. | United States | 2009 | 459 million[18] | 98 million U.S. monthly active users[19] | |||
| 13. | Snapchat | Snap | United States | 2011 | 433 million[20] | 265 million daily active users[21] | |
| 14. | United States | 2005 | 430 million[22] | 52 million daily active users[23] | |||
| 15. | Douyin | Bytedance | China | 2016 | 400 million[24] | ||
| 16. | Kuaishou | Kuaishou | China | 2011 | 400 million[25] | ||
| 17. | United States | 2006 | 330 million[26] | 192 million monetizable daily active users[26] | |||
| 18. | Skype | Microsoft | Luxembourg[27] | 2003 | 300 million[28] | 40 million daily active users[28] | |
| 19. | Tieba | Baidu | China | 2003 | 300 million[29] | 1500 million registered users[29] | |
| 20. | Viber | Rakuten | Luxembourg[30] | 2010 | 260 million[20] | 1169 million registered users[31] | |
| 21. | Microsoft | United States | 2003 | 250 million[32] | 700 million registered users[32] | ||
| 22. | imo | PageBites | United States | 2012 | 200 million[33] | ||
| 23. | Line | Naver | Japan[34] | 2011 | 169 million[35] | ||
| 24. | PicsArt | PicsArt | United States[36] | 2011 | 150 million[37] | ||
| 25. | Likee | Bigo Live | Singapore[38] | 2017 | 150 million[39] | ||
| 26. | Discord | Discord | United States | 2015 | 140 million[40] | ||
| 27. | Zoom | Zoom | United States | 2012 | 300 million daily participants[41] | ||
| 28. | Teams | Microsoft | United States | 2016 | 75 million daily active users[42] | ||
| 29. | Quora | Quora | United States | 2009 | 300 million monthly unique visitors[43] | ||
| 30. | Meet | United States | 2017 | 100 million daily participants[44] | |||
| 31. | iMessage | Apple | United States | 2011 | 1.4 billion active Apple devices[45] | ||
| 32. | FaceTime | Apple | United States | 2010 | 1.4 billion active Apple devices[45] |