This program was written to parse and process live UDP data streams from Raspberry Shake personal seismographs and Raspberry Boom pressure transducer instruments. rsudp allows users the options to see their data in real time, create alert parameters, and be notified in various ways when their instrument detects sudden motion. It is written in Python and is therefore highly customizable. This is the ninth public release of rsudp, codenamed "South American," after the tectonic plate that contains the continent of South America and much of the Atlantic and Southern Oceans. It is the fourth stable release. This release coincides with the publication of the JOSS paper describing rsudp. rsudp's repository is here, and its documentation is available here.