Qiscus - Engage your customers from your own apps and mainstream chat apps like Whatsapp, LINE, Facebook Messenger, Telegram, Email, Twitter, Instagram, etc. and centralize all chats into a single dashboard.
Telegram API - We offer two kinds of APIs for developers. The Bot API allows you to easily create programs that use Telegram messages for…
WeChat API - WeChat API and SDK allow developers to access and integrate the functionality of WeChat with other applications.
TDLib - Build your own Telegram
Kait.ai - Connecting People With Brands
Skygear Chat - Build full-featured messaging apps fast.