This article discusses various tools that can be used to collect metrics from ActiveMQ, a popular open-source messaging server. These include command line tools, web consoles, JMX monitoring tools like JConsole and Hawtio, as well as the statistics plugin and management message API for more programmatic access to metrics. The article also mentions that while these tools provide valuable insights into ActiveMQ's performance, a comprehensive monitoring strategy should also include monitoring of producers, consumers, and infrastructure.