Number To Whatsapp - A utility tool which lets your start a Whatsapp conversation without saving the contact of the said person first.
StackWhats - Add the WhatsApp Live Chat to your website
BetterChat for WhatsApp - Gorgeous new full-featured WhatsApp client for the Mac.
Glific - Uplift millions of lives with digital two-way communication
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
WATI - No-code chatbot builder for WhatsApp Business