Intraestructure

Operating Systems

• Freebsd
• Centos
• OSX

Virtualization

• Openvz
• Xen / XenCloud

Webservers / Reverse proxy

• Nginx
• Varnish
• unicorn+nginx

Devops

Server provisioning and deployment

• Puppet

Graphs and stats

• Ganglia
• Graphite
• Nagios

Scaling (making it fast)

• Varnish
• memcached

Web development

Frameworks

• Ruby on Rails
• Sinatra
• Nanoc (static sites)