SEGGER SystemView is another software tool that can be used with SEGGER debug probes. It provides a means to visualize the flow of tasks and interrupts in a system. SystemView works by adding a small amount of code into the project. FreeRTOS already has Trace Hook Macros, which was specifically designed for adding in this type of third-party functionality.
Unlike Ozone, SystemView doesn't have any programming or debugging capabilities, it is only a viewer.