[vito]

Wrote a similar web-based tool a while back, primarily for grouping goroutines by their source location:

https://github.com/vito/swirly

Try it out here:

https://rawgit.com/vito/swirly/master/index.html

...with: https://gist.githubusercontent.com/vito/486918d4c759184eb1d4...

[toqueteos]

This is even better! I highly encourage you to publish this or at least write a README for it.