Mail Server

Based on a very reliable MTA

http://www.postfix.org

Web Server

Apache the defacto standard

http://www.apache.org

File Server

The Replacement for Windows or MAC File Services by SAMBA

http://www.samba.org

DHCP Service

Gets your Machines on the network with Zero network configuration

http://www.dhcp.org

Fax Server

Built on HylaFax with a web interface for ease of use

http://www.hylafax.org

Proxy Server

Transparent Proxy for caching web pages Built with Squid

http://www.squid-cache.org

Firewall

IP-Tables and traffic control keep the bad guys out

http://www.netfilter.org

Groupware Server

OpenXchange a collaboration of services

http://www.open-xchange.org

SMS Server

For Sending and Receiving SMS Messages carrier independent web enabled

http://smslink.sourceforge.net/

Tagged Message Delivery Service

Eradicate Spam with TMDA

http://tmda.net

Spam Filters

Built on Spam assassin

http://spamassassin.apache.org

Virus Scanners

http://www.clamav.net

Nagios Server

Server , Service and Network Monitor

http://www.nagios.org

Accounting System

SQL Ledger a web based accounting package

http://www.sql-ledger.org/

Service Centre Trouble Ticketing System

OTRS - Open Ticket Request System

http://otrs.org

Document Storage

Using Postfix as the Backend Database Standard HP Scanners and Built on Jboss Application Server.

http://www.jboss.org

DNS Server

To keep all your domain records up to date we also offer a parking service

http://www.isc.org/index.pl?/sw/bind/

LDAP Server

Directory Services

http://www.openldap.org/

Radius Server

http://www.freeradius.org/

FreeRADIUS is the premiere open source RADIUS server. Based on current statistics, there are over 50,000 deployments of the software. These deployments include small sites with 10 users, large-scale enterprises with tens of thousands of users, and carrier-class deployments with over 10 million users. In total, the sites that we know are using FreeRADIUS support nearly 100 million users. The only other servers that come close in terms of market share and/or number of sites are ACS and IAS.

The server scales easily from embedded systems with small amounts of memory to systems with millions of users. It is fast, flexible , configurable, and supports more authentication protocols than most commercial servers. It includes support for SQL, LDAP, RADIUS Proxying, failover, load balancing, and nearly 100 vendor dictionary files. It can perform authentications via the PAP, CHAP, MS-CHAP, EAP-MD5, EAP-GTC, EAP-TLS, EAP-TTLS, PEAPv0, LEAP, EAP-SIM, and Digest authentication protocols.

NAS Servers

Network Attached Storage

supporting: CIFS (samba), FTP, NFS, AFP, RSYNC, iSCSI protocols, S.M.A.R.T., local user authentication, Software RAID (0,1,5) with a Full WEB configuration interface. FreeNAS takes less than 32MB once installed on Compact Flash, hard drive or USB key.

http://www.openfiler.com