- Linux dists: Debian, CentOS, Ubuntu
- Windows Server: 2008-2012R2
- Solaris: 2.6 - 11
- Webservers: Apache,Nginx, Litespeed
- Databases: MySQL, Oracle, MS SQL
- Mail servers: Postfix, Dovecot, Courier
- Virtualization: Xen Server, Kvm
- Monitoring: Nagios, munin
- Networking, SAN (FC, iSCSI),