Host Operating Systems

• Linux - CentOS, Fedora, Redhat, Others
  
• Windows Server 2008, Windows Server 2003
• Mac OS X Server
  

Virtualization

• VMware
  
• Microsoft Hyper-V

Data Warehouse

• MySQL, PostgreSQL, Others
  
• Microsoft SQL
• Oracle
  

Web Servers

• Apache
  
• Microsoft IIS
• Various Php-, Perl-, Java-, Asp.net- Application Servers and Modules
  

Mail & Groupware

• Sendmail, Postfix, Qmail
• Courier, Cyrus, Procmail, Others
• Microsoft Exchange Server 2007 & above
• Security Standards: SPF, Sender-ID, Domainkeys, Antispam & Antivirus Modules
• MS Sharepoint Server Farms
• MS Project Server
• OpenLDAP
  

Communications

• Flash Media Server, Flex-Development
  
• Asterisk*, Sip Express Router, Enum -Hosting & -Routing
• Microsoft Office Communications Server
• OCS Mediation Server
• Irc
  

Network & Security

• Iptables
• Microsoft ISA Server
• OpenVPN, Citrix, etc.
• DFS, NFS, Samba
• Secure FTP & FTPS (TLS), SSH
  
• OpenSSL, MS-CA
  

Other

• Named (dns)
• MS Active Directory
• Hosted Web-Marketing Statistics & Reporting
  
• Various Hosted CRM- & BI- Solutions
  
• QlikView