Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Smooch.io for Facebook Messenger - Message your customers from Slack, Front, a bot or anywhere!
Carrd - Simple, responsive one-page site creator.
It's Alive - Create a Facebook bot in minutes
mmm.page - Dead simple, drag & drop personal websites
Message.io - Make your chat bots cross-platform