WATI - No-code chatbot builder for WhatsApp Business
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
WhatsApp Business - Communicate more efficiently with your customers
tawk.to - tawk.to is a free live chat app that lets you monitor and chat with visitors on your website or from a free customizable page
AiSensy - Whatsapp Chatbot, CRM & Marketing
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.