ClearOS server. Are you a ClearFoundation community member?
The open source revolution in the software industry has made it possible to provide ClearOS to community members at no cost. Among other features, Antivirus, Antispam, VPN and Content Filtering are built right into the software, while also providing a simple Marketplace to add on additional services if desired. With ClearOS, you can avoid costly vendor lock-in and proprietary formats; instead, you can embrace open standards and protocols. For those looking for a production edition, ClearOS Community is also where we ensure proper function & test udpates, and thus provide a quality tested edition with ClearOS Professional.
ClearOS Pro is fully supported and intended solely for production users.