Software debugging is an activity that typically requires an huge effort, primarily due to the need to analyze multiple conditions that determine the execution context of the software and to create assumptions that explain the problem, for only thus being able to fix it. In the case of distributed systems, parallelism, order scheduling, delays in communication and equipment failures are examples of factors that further increase the complexity of the debugging activity. Therefore, the search for tools that assist in this process is continuous. In this dissertation, we propose a tool for non-intrusive monitoring and visualization of communications between components of distributed systems, based on communication protocol analyzers and monitoring of read and write system calls.