ClearFoundation has unveiled ClearOS 5.1, a Linux server operating distribution for the small organisations and distributed environments. The ClearOS Linux distribution has an installed-base of over 120,000 systems that serve approximately 1.2 million users. The company said that it is available in over 20 languages and is utilised in approximately 122 countries around the globe.

Earlier known as ClarkConnect, ClearOS has been made open and free by ClearFoundation, including software such as MultiWAN which allows multiple, balanced internet connections. Other limitations and commercial restrictions on the ClearOS platform have also been removed for this version, and all subsequent versions, said ClearFoundation.

The ClearOS operating system integrates dozens of open source applications in a single management interface.

Michael Proper, chairman of the ClearFoundation, said: ClearOS, a Linux distribution that is an entirely open and free operating system platform, is being actively expanded by a large community of developers dedicated to meeting simple IT needs. Many elements, including MultiWAN, HotLAN, and unlimited mailbox support, are now available for use and further open development.”

The company added that ClearOS integrates with ‘in the cloud’ services from ClearCenter and others like Google Apps. ClearCenter offers free software and bug fixes for the current versions of ClearOS. The open ClearOS API allows a flexible platform for connectivity to third-party open and closed applications, both locally on the platform and in the cloud.

According to ClearFoundation, ClearCenter provides a variety of products, new features, third-party software and, technical and platform services that extend the functionality of the platform for production and enterprise installations.

These services include content and software updates offered by ClearCenter’s Service Delivery Network platform called ClearSDN and from other ClearCenter partners from around the globe. ClearCenter will launch its ClearSDN services and partner program in October 2009.

John Terpstra, president of ClearFoundation, said: ClearOS is uniquely targeted at sites that are distributed and have fewer than 50 users. Key benefits include: freedom from vendor lock-in, reduced operating cost, scalability, and extensive support.

“ClearOS provides perimeter security, unified threat management, content filtration, file sharing, messaging, MultiWAN and other essential data services. The WebConfig interface provides a simple, yet secure, remote management tool integrating ClearOS into the ClearSDN management environment.