* Apache and lighttpd statistics provided by mod_status: apache
* APC UPS's charge, load, input/output/battery voltage, etc.: apcups
* Ascent server statistics: ascent
* battery status: battery
* bind9 name-server and zone statistics: bind
* connection tracking table size: conntrack
* CPU utilization: cpu
* CPU frequency: cpufreq
* output to comma separated values (CSV) files: csv
* parse statistics from websites: curl
* parse JSON files: curl_json
* query data from a relational database: dbi
* disk space usage: df
* disk and partition throughput: disk
* DNS traffic information: dns
* E-Mail statistics (count, traffic, spam scores and checks): email
* amount of available entropy: entropy
* execution of external programs: exec
* count the number of files in directories: filecount
* Linux file-system based caching framework statistics: fscache
* query data from Java processes using JMX: GenericJMX (Java based plugin)
* Receive and interpret Ganglia multicast traffic: gmond
* harddisk temperature: hddtemp
* network traffic: interface
* IPMI sensors information: ipmi
* iptables statistics: iptables
* IPVS connection statistics: ipvs
* IRQ counters: irq
* embedded Java Virtual Machine: java
* CPU, disk, network statistics of guest systems: libvirt
* system load averages: load
* logging to files, STDOUT and STDERR: logfile
* Atheros wireless LAN chipset statistics: madwifi
* motherboard monitor: mbmon
* Query and parse data from a memcache daemon: memcachec
* statistics of the memcached distributed caching system: memcached
* memory usage: memory
* multimeter statistics: multimeter
* MySQL statistics provided by MySQL's "show status" command: mysql
* detailed Linux network interface and routing statistics: netlink
* IO via the network: network
* NFS utilization: nfs
* Nginx (a HTTP and E-Mail server/proxy) statistics: nginx
* send desktop notifications to a notification daemon: notify_desktop
* send notification E-mails: notify_email
* NTP daemon's local clock drift, offset to peers, etc.: ntpd
* UPS information: nut
* OpenVPN traffic and compression statistics: openvpn
* Optimized Link State Routing daemon statistics: olsrd
* PostgreSQL database statistics: postgresql
* PowerDNS name server statistics: powerdns
* number of processes: processes
* output to RRD files: rrdtool
* embedded Perl interpreter: perl
* network latency statistics: ping
* information about network protocols: protocols
* lm_sensors information (e.g. CPU temperature, fan speeds): sensors
* serial port traffic: serial
* values from SNMP enabled network devices: snmp
* swap usage: swap
* logging to syslog: syslog
* parse table-like structured files: table
* incremental parsing of logfiles: tail
* number of TCP connections to specific ports: tcpconns
* power consumption measurements from "The Energy Detective" (TED): ted
* Linux ACPI thermal zone information: thermal
* TeamSpeak2 server statistics: teamspeak2
* external runtime interface: unixsock
* system uptime: uptime
* number of users logged into the system: users
* set the hostname to an unique identifier: uuid
* detailed virtual memory statistics: vmem
* system resources used by Linux-VServers: vserver
* wireless network stats: wireless
* send collected values to a web-server: write_http