Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
TollFreeForwarding - TollFreeForwarding offers hosted PBX, call forwarding and IVR solutions.
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.
Loop Communications - Loop Communications provides hosted VoIP business phone systems to small businesses and mid-sized companies.
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.
Vonage - Vonage is a cloud-based all-in-one VoIP software solution designed for multiple industries such as accounting, healthcare, finance and marketing etc.