Rocket.Chat - Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
Telegram API - We offer two kinds of APIs for developers. The Bot API allows you to easily create programs that use Telegram messages for…
CometChat - Seamless Real-Time Chat Integration for Your Applications.
TDLib - Build your own Telegram
Taskworld - Taskworld is a cloud-based collaboration platform that increases productivity, engagement at work.
TapTalk.io - TapTalk.io is a complete in-app chat SDK and messaging API - Easy integration and customizeable.