• gplv3

check_sys

• mit

Trend Micro ServerProtect

• gplv3
• QoS

Cisco QoS monitoring

• gplv
• HW Sensor Messtechnik

check_hw_sensors

• gplv3

check_connections

• gplv3

Check Diskspace via SNMP

• other

check_xmpp

• gplv3
• UPS

APC SmartUPS check if UPS is on batteries or cable

• other

check_by_ssc

• gplv3

check_snort