Microsoft Office Communicator is a Social & Communication software developed by Microsoft Corporation. After our trial and test, the software is proved to be official, secure and free. Here is the official description for Microsoft Office Communicator:

MarydownEditor: Office Communicator 2007 R2 is a unified communications client that helps people be more productive by enabling them to communicate easily with others in different Locations or time zones using a range of different communication options, including instant messaging (IM), voice, and video. Integration with programs across the 2007 Microsoft Office system — including Word, Excel, PowerPoint, OneNote, Groove, and SharePoint Server — gives information workers many different ways to communicate with each other via a consistent and simple user experience.