WhatsApp Messenger is a freeware, cross-platform messaging and Voice over IP (VoIP) service owned by Facebook. It allows the sending of text messages and voice calls. en. Select your language. Azərbaycanca; Afrikaans; Bahasa Indonesia; Bahasa Melayu. SEND A MESSAGE -Skip exchanging phone numbers, just send a message. It's seamless across devices. SHOW YOUR REACTION - Add a silly sticker Yahoo Messenger will no longer be available after July 17, 2018. Find the answers to your questions and read how to download your conversations into a permanent.