The Color Bandwidth Meter (CBM) is a small program to display the traffic currently flowing through the network devices in a simple curses-based GUI. The traffic for all interfaces include values as receive, transfer and total Bytes/s or bits/s (or its multiples as KB/s and Kb/s).

It is useful for Internet or LAN speed tests, measuring the velocity of a link, to establish a benchmark or to monitor your connections. CBM can be used with virtual, wired or wireless networks.