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Activity Monitor can do that. I'm not sure of a particular app that would be the equivalent though. versiontracker.com or macupdate.com would be a good place to start
 
DXoverDY said:
Activity Monitor can do that. I'm not sure of a particular app that would be the equivalent though. versiontracker.com or macupdate.com would be a good place to start
Network tab?
 
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