Avochato - Text messaging for your business.
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Message Me - Website to create your contact business card
SendPulse - Maximizing e-mail marketing open rates automatically
StackWhats - Add the WhatsApp Live Chat to your website
Botsify - Ever wonder if you could replace your live chat support system with a chatbot?. Its possible now with Botsify Chatbot For Website.