FREE NAS is a Open source Nas Server can act as Network-attached storage server. FreeNAS is free tool to use and deploy without cost. It acts as fileserver and can be handled very easily, with less administrative features. It also support RAID Features for data security and can be integrated with existing microsoft active directory environment. It has been tried by our team member. It will be definitely useful to every System Administrator. It exactly suits for small and medium organization.

Vist website http://www.freenas.org

SMOOTH WALL is a Open Source Project developed and maintain SmoothWall Express. It is a free firewall that includes its own security with Linux Platform. Is a network firewall, designed with home and small business users in mind. It is completely free to use, download, and distribute. Designed for ease of use, SmoothWall is configured via a web-based GUI, and requires little or no knowledge of Linux to install or use. It has been tried by our team member. It will be definitely useful to everySystem Administrator.

Visit Website http://www.smoothwall.org

VYATTA is an Open Source Project developed and maintained by Vyatta manufactures an open source router/firewall/VPN product for networks. The system is a specialized Linux distribution with networking applications and management interfaces for those applications. Commercial engagements are available via integrated hardware appliances The Vyatta system is intended as a replacement for Cisco IOS 1800 through 7200 series Integrated Services Routers (ISR), with a strong emphasis on the cost and flexibility inherent in an open source. It has been tried by our team member. It will be definitely useful to every System Administrator.

Visit Website http://www.vyatta.com/

ZIMBRA is an open source server and client technology for next-generation enterprise messaging and collaboration. The Zimbra Collaboration Suite (ZCS) Web Client is a full-featured collaboration suite that supports email and group calendars using an Ajax web interface that enables tool tips, draggable items, and right-click menus in the UI. ZCS is compatible with proprietary clients such as Microsoft Outlook and Apple Mail.It has been tried by our team member. It will be definitely useful to everySystem Administrator

Visit Website http://www.zimbra.com/

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