System allows users to find out if a contact is available wherever they are, leave a message regardless of the medium (instant message, voicemail, email, video, etc.) and log on from a variety of devices: computer, telephone, tablet or web browser. Users can manage internal communications in a standard manner, regardless of source: telephone or smartphone. Data is hosted in Luxembourg and services are operated from a cloud platform. Share data (emails, contacts, calendars) and access from different types of devices: PC, web browser, tablet, mobile phone. Compatible with Blackberry, iPad, iPhone, Windows Phone.