WhatsApp Business - Communicate more efficiently with your customers
Slack with your Users - Speak to your app's users entirely within Slack
WhatsApp Chatbots by SendPulse - No-code chatbots and shared inbox for WhatsApp
Conversity - Easiest way to manage Facebook Messenger chats
WATI - No-code chatbot builder for WhatsApp Business
Avochato - Text messaging for your business.