WhatsApp announced that they crossed the 1 billion monthly active user milestone on Feb 1, 2016. That’s nearly one in seven people on Earth who use WhatsApp each month to stay in touch with their loved ones, their friends and their family. WhatsApp becomes the most used messaging app.
QQ, produced by Tencent in China, ranks the second with 860 million monthly active users. The majority of QQ users are Chinese.
Messenger ranks the 3rd with 800 million monthly active users.
WeChat, another Tencent chat product, has 650 million monthly active users. Most users are from China.
Skype by Microsoft has 300 million active users.