SendBird - SendBird is messaging-as-a-service.
Sleepy Baby - Help your baby sleep with the Sleepy Baby soundboard.
CometChat - Seamless Real-Time Chat Integration for Your Applications.
Relay - An extension that adds Discord-style chat to every website
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Relaxing Soundscape - Design your own relaxing soundscape for relaxation & sleep.