BlueMind is an Open Source solution for collaborative messaging and unified communications. 

We unlock the collaborative messaging market by breaking the Outlook stronghold, allowing for the first time Outlook users to switch to an Open Source messaging system... without giving upon their habits. We are also offering the best support for Thunderbird, the web and mobiles.
Description of the project and its goals    

Our goal is to offer any type of organization the possibility to choose a sovereign and competitive alternative to the offers of the American players Microsoft, Domino or Google, in Europe and Africa.