Open Source Exchange Server 2003 drop-in project

OpenChange Project Homepage

Missing key, with Exchange server functionallity SOHO has no excuse not to use *nix...

Openchange intends to provide an Open-Source implementation of Microsoft Exchange Server 2003 under Unix Platforms. The Openchange Project is developed in C language under the BSD license, and will primary work on NetBSD, OpenBSD, FreeBSD and Linux platforms. The project time line has been defined to approximatively one year, and we believe the project will be in a complete stable state at this time. Openchange wishes to integrate the enterprise working environment and to substitute to an Exchange Server in a transparent way, so final users may continue to use Outlook, or any other mail client.