OpenMapi.org is an effort supported by Wilken (Ulm), VIPcom GmbH (München), Zarafa (Delft) and Topalis AG (Stuttgart) to provide an open groupware API based on MAPI that supports a variety of backends (servers) and can be used to develop clients in many programming languages and on different operating systems.

Currently we support or plan to support Java, C#, PHP, C and Python as well as Linux (arm,x86,s390), Mac OS X (x86) and Windows (x86).