DialogTech - DialogTech is an end-to-end call attribution and conversion platform.
TextNow - TextNow is a mobile virtual network operator (MVNO) that provides a free phone service to users by using other cellular networks coverage.
Invoca - Call tracking & analytics software
Dingtone - Dingtone is a free call and texting application for making unlimited calls and text messages to any number at the moment registered in any part of the world by any cellular company.
CallTrackingMetrics - Know who is calling and how they found you. Maximize the return on your advertising.
TextMe - TextMe is a free calls and messaging application at both local and international levels.