Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.
SendHub - Get a business phone system on your smartphone and computer. We provide professional, affordable sms, text, and voice solutions in an easy to use system. 14-day free trial.
Olvid - The most secure messaging app in the world.
Mobiniti - Mobiniti offers a mobile marketing platform for clients to invite customers to engage with their brand through SMS via their mobile phone.
WireMin - WireMin is a private messaging tool for your most personal communications.
CallHub - Predictive Call Center, Voice and Text Broadcasting app