An alternative to Microsoft’s .NET-Framework that allows Mono programs to run on Windows, Mac OS X, Linux, as well as various Unix derivatives, all without changing the binary code. Further information available on The H.
Used to exchange messages, appointments, contacts and documents. Supports cooperative working in teams or departments. Client available for a range of Linux, Windows and Mac OS versions. Includes an optimised web front end (compatible with HTML, WAP, HDML and WML) for mobile access. Download requires registration.