Various arrangements for debugging a hung thread of a software application are presented. A thread monitor module may be executed that monitors for any hung threads within a plurality of executing threads. A monitoring initialization message may be received that initiates thread monitoring of a thread. In response to the monitoring initialization message, tracking of the thread may be commenced by determining whether an update message for the thread has been received within an amount of time allotted for the update message to be sent. If the update message is not received, the thread may be identified as hung. Debugging information generated in response to identifying the hung thread may be used for creating an improved version of the software application that prevents the hang.