Is there a debugging tool for Flex that works like Silverlight spy or FireBug?
De MonsterDebugger . It has an AIR application that works like firebug, allows you to check / modify variables, call public methods at runtime, etc. It is not only Flex, but you can use it in any as3 project.
reflexutil for flex. But I did not use it.
In addition, I found a list of useful tools for debugging Flex or Flash .
flexbug, fxspy. , , , , - ... :)
, http, - .. charles.