This is a thing I wrote to use when the regular angular.js profiler UI is not up to the task. I had profiling data that took a couple of minutes to load and then crashed my browser when I was trying to search through it. This one is a lot more basic, but does what I need and is blazingly fast in comparison.
To build it:
qmake make ./p6profiler-qt file.[json,html]
As usual, patches welcome. The C++ is likely pretty horrible, so patches with no functional changes are also welcome :)