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.
WhatsFake - Make fake conversations that look just like WhatsApp
Skygear Chat - Build full-featured messaging apps fast.
SMS Class Tools - SMS Class Tools is a fake message generator that allows you to have some fun with your colleagues and friends.
WeChat API - WeChat API and SDK allow developers to access and integrate the functionality of WeChat with other applications.