EtreCheck is a simple little app to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac.
EtreCheck automatically removes any personally identifiable information from the output.
EtreCheck is good program but it is no longer free but trial ware. After 5 times you need to pay US $10 for it to continue to work.
I just had EtreCheck for 24 hours and my MacBook Pro runs like new. A great help to analyse and track troublemakers in apps. Great App.
It's great for not only reporting problems but also removing malware.