You can use JConsole or VisualVM (with the MBeans plugin) or any other GUI JMX tool to administer a HornetQ server. There currently is not web-based admin console that ships with HornetQ.
I encourage you to check out the ActiveMQ Artemis broker. The HornetQ code-base was donated to Apache ActiveMQ back in 2014 and is now being actively developed as ActiveMQ Artemis. There is currently no active development on HornetQ. See more details about this on the HornetQ blog.
Thank you Justin for providing information.