tcpblast/udpblast is a simple tool for probing network and estimating its throughoutput (measuring network bandwidth).
You can download it from the following link: https://packetstormsecurity.com/files/download/13362/tcpblast-19990504.tar.gz
Source: https://packetstormsecurity.com/files/13362/tcpblast-19990504.tar.gz.html