AVOXI - AVOXI to deliver amazing call quality & an exceptional customer service experience.
FluffyChat - Open. Nonprofit. Cute ?
Sonetel - Sonetel is a communication app that lets you make an international business call at the cost of local calls.
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.
Global Call Forwarding - Global Call Forwarding offers local and international toll free numbers which can be forwarded to any phone, anywhere in the world.
Molly (Signal fork) - Molly is an independent Signal fork for Android