“Facebook Inc.” includes WhatsApp, Instagram and of course Facebook and Messenger, four of the world’s largest social media / messaging services. Facebook alone reaches more than 1.6 billion people per month and WhatsApp also passed the billion-user milestone earlier this year. Tencent, the Chinese company behind WeChat and Qzone can also boast a billion users in total.
This chart shows monthly active users of selected social networks and messaging services.