- Windows 2000 / 2003 / 2008 / 2012 Server
- Red Hat OS
- CentOS
- Fedora
- Debian
- Ubuntu
- Free BSD
- Bind
- Simple DNS
- Microsoft DNS
- Nagios
- Ipcheck
- Solarwinds
- Paessler
- CPanel/WHM
- Plesk Panel
- Plesk Expand
- Hsphere
- HSPcomplete
- Siteutil
- Helm
- Ensim
- DirectAdmin
- Hosting Controller
- Webmin
- Apache
- IIS 6/7/7.5
- Nginx
- Sendmail
- Qmail
- Exim
- Postfix
- MailEnable
- Microsoft Exchange
- SmarterMail
- Zimbra
- ModernBill
- Parallels Plesk Billing
- WHMCS
- Clientexec
- AWBS
- PHP
- Ruby & Ruby On Rails
- Perl
- Python
- Django
- ASP
- ASP.NET
- ColdFusion
- FrontPage extensions
- MySQL
- Microsoft SQL Server
- Postgre SQL
- Sqlite
- R1Soft CDP
- Bacula
- Acronis
- NTBackup
- PHDVBA
- Plesk backups
- CPanel/WHM backups
- Rsync
- Backup EXEC
- Web, DNS, database clusters
- Load balancers (LVS, heartbeat)
- SpamAssassin
- MailScanner
- ClamAV
- Norton Antivirus
- McAfee Antivirus
- Paralles Virtuozzo
- OpenVZ
- Xen
- Vmare
- Hyper-V
- Citrix Xen
- KVM
- Amazon Web Services
- Kayako
- Fusion
- PerlDesk
- Zendesk
- osTicket
- Resolve
- PCI security standards implementation
- SSL certificates installation and configuration
- Software firewalls (ipchains, iptables, APF, Windows Firewall)
- Linux kernel hardening
- Rootkit protection/detection (Nessus, rkhunter, chkrootkit, AVZ, Rootkit Revealer)
- DoS attacks protection/detection
- Intrusion protection/detection (snort, DenyHosts, OSSEC, BFD)
- Web servers hardening (Apache, IIS, PHP, Mysql)
- LAN/WAN/VPN management
- Bandwith management (shapers)
- IP management (accounting, tracking)
- ProFTPD
- Pure-FTPD
- WU-FTPD
- Vsftpd
- Microsoft FTP