I added a new tool to the Tools page, called Interface Traffic Indicator. The tool can be compared to STG, but needs to be installed on a workstation. The tool can be used to measure the throughput of a specific interface. To use the tool, you need at least the IP address of the device and a SNMP Read-Only string.
Tools like this can come in handy when measuring the used bandwidth of an interface in real-time. Appliance, like Cacti and Nagios, often poll ones in five minutes, which is very useful for establishing a baseline, but not for troubleshooting real-time.
More information about the Interface Traffic Indicator can be found here.