FlashPreloadProfiler - Good alternative to Adobe Flex Profiler

FlashPreloadProfiler is an multi-purpose profiler designed to help productivity and stability during development of any flash scene. It gives access to more profiling tools like Overdraw graph, Mouse listeners graph, Internal events time repartition, Instantiation Statistics/StackTrace for all object (including Temporary object), Sampling data "Dump", hook on ANY flash app, local or web, debug or release.

source code location: https://code.google.com/p/flashpreloadprofiler/