Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
DroidCam - DroidCam – Use your Android phone as a wireless webcam or an IP Cam!
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.
Iriun Webcam - Use your phone's camera as a wireless webcam in your PC or Mac.
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.
IP Webcam - A universal network camera adapter for the Windows operating system.