ChatSecure - ChatSecure is a free and open source messaging app that features OTR encryption over XMPP.
Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
Chatib - Chatib is an online chat room where you can meet and chat with new people, make them friends, or even data them online.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Qudo – Find Snapchat Friends - Qudo is a great app that helps you Find Snapchat Friends directly from your iPhone.
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.