Facebook Messenger Kids - Safer and More Fun Video Calls and Messaging
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
deface - removes facebook from facebook so you can chat with friends without distractions.
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.
Stack App - Stack is a Tweetdeck for your social apps
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.