Way to listen in on all Apple Events?

Question

I'm looking for a way to listen in to all Apple Events send by any program to any other program. There was an app, AEMonitor, that used to do this but it is abandonware as of now.

Is there a known way to do this via cocoa, carbon, etc?

Any help MUCH appreciated.

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Target OS is 10.6

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Carification: I'm looking to monitor ALL apple events or at very least a lion share of them. I am aware that it is possible to launch an app and listen to its AEs like this.

Answer 1

From what I recall of AEMonitor (which I occasionally miss), it required the relaunch of the target application. I'd bet that it was setting the environment variables that are linked to in the macosxhints.com article.