perfSONAR ("Performance focused Service Oriented Network monitoring ARchitecture") is an open source toolkit for running network measurements across multiple domains, built and used by the network research and education community perfSONAR toolkits hosted by ASNET-AM:

http://nas.perfsonar.asnet.am https://nas2.perfsonar.asnet.am https://iiap1.perfsonar.asnet.am https://iiap2.perfsonar.asnet.am https://flib.perfsonar.asnet.am https://hist.perfsonar.asnet.am https://ysu.perfsonar.asnet.am