Expresso Instant Messenger is an innovative approach to conventional instant messaging (IM). Integrating the best of both PC-based instant messaging and mobile messaging along with support for rich multimedia across multiple platforms, users enjoy a powerful communications environment for both business and personal use.

Expresso is available in both carrier and enterprise grade editions providing specific features required for these environments.

The Expresso API and SDK is a framework for developers to integrate Instant Messaging functionality into custom applications.