Fake Call and Sms - Fake Call and Sms app is a fake message sender and caller app that provides features through which you can receive as well as can send simulated messages to desired contacts.
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.
Fake Text Message-Prank text app - Fake Text Message-Prank text app allows users to take screenshots of text messages from their favorite celebrities so they can share them on various social media platforms in order to prank other users.
Skygear Chat - Build full-featured messaging apps fast.
iPhoneFakeText - iPhoneFakeText is one of the best and most powerful tools for writing long & funny texts for iPhone devices.
WeChat API - WeChat API and SDK allow developers to access and integrate the functionality of WeChat with other applications.