GetChat.App - Add WhatsApp chat to your website for free
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
QR.io - Generate fully customized QR Codes, with color shape & logo
Carrd - Simple, responsive one-page site creator.
FastQR.Shop - Create QR Codes for your restaurants, bars and cafes
mmm.page - Dead simple, drag & drop personal websites