- LINUX/UNIX : RedHat Enterprise Linux, Suse Enterprise Linux, CentOS, Debian, Ubuntu, OpenSUSE, CoreOS, FreeBSD, SUN Solaris 10.
- CLOUD : Amazon Web Services, CDN Edgecast, Digital Ocean.
- VIRTUALIZATION : Vmware ESX, Proxmox VE, Docker, KVM.
- DATABASE : MySQL, MariaDB, PostgreSQL, MongoDB, Redis, Cassandra.
- SERVERS : Nginx, Apache, JBOSS, BIND, Power DNS, Zimbra, Unbound, Iredmail, WHM CPanel, PHP7, HHVM, etc.
- AUTOMATION TOOLS : Ansible, Chef, Puppet.
- MONITORING : New Relic, Manage Engine, Nagios, Smokeping, Catchpoint, Cacti.
- HA/LOAD BALANCING : Heartbeat, Keepalived, HaProxy.
- ANTIVIRUS : Kaspersky Enterprise, Symantec Endpoint, ESSET, Sophos.
- SECURITY : Security Assess...